Posted: 4/27/2009 6:23:20 PM EDT
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Ok Guys/Gals
The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. |
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LMAO - not to someone that speaks english. I'll show it to my wife, she may understand it. I'm a dumb ass CJ major - we were trained to shoot innocent dogs and violate peoples 4th amend rights. |
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Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. |
Sophmore ursing student here 
The cell wall acts as the semi-permeable membrane. The solvent (water) will pass through the membrane towards the side with the higher concentration of the solute (glucose) until the concentrations on both sides of the membrane are equal. Since there is more solute (glucose) on the outside the solvent (water) will exit the cell towards the outside in an attempt to make the concentrations equal. It is a hypertonic solution and the answer is C. |
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The cell wall acts as the semi-permeable membrane. The solvent (water) will pass through the membrane towards the side with the higher concentration of the solute (glucose) until the concentrations on both sides of the membrane are equal. Since there is more solute (glucose) on the outside the solvent (water) will exit the cell towards the outside in an attempt to make the concentrations equal. It is a hypertonic solution and the answer is C. I am in my last year nursing school. I would have to agree with this. |
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Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. |
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Quoted: Quoted: Its a trick question.Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I chose "C" but this response definitely has merit. |
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Quoted: Sophmore ursing student here The cell wall acts as the semi-permeable membrane. The solvent (water) will pass through the membrane towards the side with the higher concentration of the solute (glucose) until the concentrations on both sides of the membrane are equal. Since there is more solute (glucose) on the outside the solvent (water) will exit the cell towards the outside in an attempt to make the concentrations equal. It is a hypertonic solution and the answer is C. Hyperosmotic. We are talking molecules. Glucose and any other sugar are not ionic. |
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Definitely C.
Tell her to remember that in simple semi-permeable membrane situations, water moves from an area of lower concentration of solute (glucose) to a higher concentration of solute. ETA: Also there may be questions regarding the resultant size of the cell. In the case where there is a higher concentration of solute outside the cell, water will move out of the cell and the cell will shrink. The cell is in a hyperosmotic situation. In the case where there is a higher concetration of solute inside the cell, water will move into the cell and the cell will swell. A cell is in a hypoosmotic solution. |
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Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. |
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Definitely C. Tell her to remember that in simple semi-permeable membrane situations, water moves from an area of lower concentration of solute (glucose) to a higher concentration of solute. No where does the question say simple or semi-permeable. The question says CELL WALL. To me that could also mean a complex active cell wall. |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. Students are getting tested on the basics of osmosis, not the mechanics of glucose transport. |
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Definitely C. Tell her to remember that in simple semi-permeable membrane situations, water moves from an area of lower concentration of solute (glucose) to a higher concentration of solute. No where does the question say simple or semi-permeable. The question says CELL WALL. To me that could also mean a complex active cell wall. Reading comprehension FTW? Nowhere in the question does it mention a cell wall which would indicate a plant cell. |
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Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. The choice 'E' is NONE of the above. Are you asserting that water would not leave the cell in attempting to achieve equilibrium? |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. In grad school we could challenge any question on an exam. It actually became quite a sport to prove the prof wrong and get them to change the answer or give you credit for a different answer. I had friends that would spend more time on the exam answers then actually studying for the test. The profs loved it because it kept them current and also made the students work and study. It was a win win situation. |
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Quoted: I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above. Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. |
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glucose does not enter via osmosis, it enters via glucose transporter (transmembrane protein- GLUT-2, i think) THIS! Halleulah! Finally a true fellow scientist amongst the masses. No shit that it doesn't enter by osmosis, we all know this, the question is testing over the basics of osmosis, not glucose transport. |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. Students are getting tested on the basics of osmosis, not the mechanics of glucose transport. RN < < < Welcome to the land of vague and choose the best wrong answer questions. |
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Definitely C. Tell her to remember that in simple semi-permeable membrane situations, water moves from an area of lower concentration of solute (glucose) to a higher concentration of solute. No where does the question say simple or semi-permeable. The question says CELL WALL. To me that could also mean a complex active cell wall. Reading comprehension FTW? Nowhere in the question does it mention a cell wall which would indicate a plant cell. Not at all you need to read the question again. Its specifically says cell at the end. Doesnt say animal or plant. Doesnt say semi or simple. I agree with you and should have said membrane and not wall. However the way the question was put forth you could presume it was a cell wall as well. |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. Students are getting tested on the basics of osmosis, not the mechanics of glucose transport. I'm thinking, based upon the conversations I recently listened to between the wife unit and fellow students, this is what is happening. The reason I said the question (and answers) may be flawed is because some of them were smart enough (I think) to point out some of the problems the above posters have mentioned. She is going to talk to the prof prior to the exam and raise some of the issues. I'll be sure to tell the wife unit to let her prof know that she received better information from the largest gun forum on the internet - that ought to help her grade. Thanks for the info everyone and, as always, It never ceases to amaze me just how smart a bunch of "gun nuts" can be. 
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| Been a nurse for 10 years and I pick C. I also agree the question is not a good one but nursing profs SUCK at test writing. I have one B ever so I'm not being a whiny barely passing bastard. "Don't read to much into the question" is Prof speak for "I am wrong but I'd never admit it" SS |
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I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above.
Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. How would you answer a student that selected the best answer, that water would indeed move out of the cell towards an equilibrium. We know equilibrium = death for a cell, but this a simple question testing the basics of osmosis not the complexities of glucose transport. |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. In grad school we could challenge any question on an exam. It actually became quite a sport to prove the prof wrong and get them to change the answer or give you credit for a different answer. I had friends that would spend more time on the exam answers then actually studying for the test. The profs loved it because it kept them current and also made the students work and study. It was a win win situation. This isn't grad school. This is either an Associates or BSN program where you answer the questions the way the professors want it. In my A&P class my professor loved debating questions also, but the nursing professors see debating questions as some sort of insult to thier intellect or challenge to their authority. As I wrote in my other post the students are getting tested on basics of osmosis not the mechanics of glucose transport. |
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glucose does not enter via osmosis, it enters via glucose transporter (transmembrane protein- GLUT-2, i think) THIS! Halleulah! Finally a true fellow scientist amongst the masses. No shit that it doesn't enter by osmosis, we all know this, the question is testing over the basics of osmosis, not glucose transport. Actually it is. He chose the glucose molecule. Glucose moves either passively or actively through cell membranes and not by osmosis. If he was asking about simple osmosis a different molecule needed to be used in the context of the question. |
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I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above.
Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. Your applying outside science answers to a Nursing question. You are "reading into the question." The answer is C. There are too many other unknown factors to say if glucose will be driven into the cell. |
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glucose does not enter via osmosis, it enters via glucose transporter (transmembrane protein- GLUT-2, i think) THIS! Halleulah! Finally a true fellow scientist amongst the masses. No shit that it doesn't enter by osmosis, we all know this, the question is testing over the basics of osmosis, not glucose transport. Actually it is. He chose the glucose molecule. Glucose moves either passively or actively through cell membranes and not by osmosis. If he was asking about simple osmosis a different molecule needed to be used in the context of the question. Glucose is ubiquitous in most osmotic questions, would you have rather they chose an ion like Na+ or Cl-? Your same remarks could be made about the question, because the cells maintain gradients to maintain membrane potentials. You cannot say that C, water will tend to move out of the cell via osmosis, is not true. |
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Quoted: Glucose moves INTO the cell by DIFFUSION (through facilitated diffusion transporter proteins) down its concentration gradient. Period. Quoted: Quoted: I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above. Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. How would you answer a student that selected the best answer, that water would indeed move out of the cell towards an equilibrium. We know equilibrium = death for a cell, but this a simple question testing the basics of osmosis not the complexities of glucose transport. |
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Glucose moves INTO the cell by DIFFUSION (through facilitated diffusion transporter proteins) down its concentration gradient. Period.
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I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above.
Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. How would you answer a student that selected the best answer, that water would indeed move out of the cell towards an equilibrium. We know equilibrium = death for a cell, but this a simple question testing the basics of osmosis not the complexities of glucose transport. Which is not an available choice, they are trying to make sure that student realizes that osmosis applies to water only, no other molecules move via osmosis besides water. They are also making sure the student understands that water will move from an area of low solute concentration to an area of high solute concentration. |
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Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. In grad school we could challenge any question on an exam. It actually became quite a sport to prove the prof wrong and get them to change the answer or give you credit for a different answer. I had friends that would spend more time on the exam answers then actually studying for the test. The profs loved it because it kept them current and also made the students work and study. It was a win win situation. This isn't grad school. This is either an Associates or BSN program where you answer the questions the way the professors want it. In my A&P class my professor loved debating questions also, but the nursing professors see debating questions as some sort of insult to thier intellect or challenge to their authority. As I wrote in my other post the students are getting tested on basics of osmosis not the mechanics of glucose transport. +1 Nursing questions are different then any other profession as far as I know. You may have a question will have all wrong answers...you have to pick the best wrong answer. Nursing questions are a very unique thing, they rarely are about testing raw knowledge, they test your thinking process. |
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Glucose moves INTO the cell by DIFFUSION (through facilitated diffusion transporter proteins) down its concentration gradient. Period.
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I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above.
Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. How would you answer a student that selected the best answer, that water would indeed move out of the cell towards an equilibrium. We know equilibrium = death for a cell, but this a simple question testing the basics of osmosis not the complexities of glucose transport. Really? So what is that pesky insulin's job? Diabetes anyone? E is the answer. However the prof probably wants C. If that were the case then diabetics cells would all crinkle up and die. |
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Quoted: Quoted: Quoted: Quoted: Quoted: Quoted: Quoted: Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. I can almost guarantee you that the professors would say the answer is C and then dismiss your explanation as reading too much into the question. Everyone has a right to be ignorant. The question as written has a multitude of flaws and vagueness and thus has multiple answers. If the prof wants a specific answer he needs to ask the question in a competent manner. You're correct but theres theory and then theres reality. Nursing professors tend to make terribly vague questions with even worse answers; then they expect you to know what they're looking for. In grad school we could challenge any question on an exam. It actually became quite a sport to prove the prof wrong and get them to change the answer or give you credit for a different answer. I had friends that would spend more time on the exam answers then actually studying for the test. The profs loved it because it kept them current and also made the students work and study. It was a win win situation. This isn't grad school. This is either an Associates or BSN program where you answer the questions the way the professors want it. In my A&P class my professor loved debating questions also, but the nursing professors see debating questions as some sort of insult to thier intellect or challenge to their authority. As I wrote in my other post the students are getting tested on basics of osmosis not the mechanics of glucose transport. +1 Nursing questions are different then any other profession as far as I know. You may have a question will have all wrong answers...you have to pick the best wrong answer. Nursing questions are a very unique thing, they rarely are about testing raw knowledge, they test your thinking process. +1 Best to ask the professor the thought process and give the best answer based on that info. Always best to get clarification. |
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Glucose moves INTO the cell by DIFFUSION (through facilitated diffusion transporter proteins) down its concentration gradient. Period.
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I have an MS in biology and have taught over a dozen introductory biology courses and have used similar questions on my exams. The answer is E. It is a trick question. First, water, and ONLY water moves by osmosis. All other molecules that are able to move would move by diffusion. Glucose is a small molecule and is able to move via passive transport. There are active transport mechanisms, but in a general sense of this question, glucose would be the molecule that moves, would move into the cell via diffusion. E - None of the above.
Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. How would you answer a student that selected the best answer, that water would indeed move out of the cell towards an equilibrium. We know equilibrium = death for a cell, but this a simple question testing the basics of osmosis not the complexities of glucose transport. Really? So what is that pesky insulin's job? Diabetes anyone? They have gotten so caught up on glucose that they have forgotten the fact that H20 freely diffuses freely through a lipid bilayer, osmosis..... |
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E) None of the above.
It looks like a decoy question to me. I'm assuming that the cell wall is considered a semi-permeable membrane that is impermeable to glucose ( the word 'osmosis' is a kind of clue) which means that either A or C is possible. If the only solute in the system were glucose, then the clear winner would be C. However, not being a biologist, I find it hard to believe that the only solute inside of a cell is glucose. The reason I see this as a decoy question is they appear to be trying to weed out individuals that misunderstand diffusion. Diffusion occurs because the activity of the species diffusing varies with position. In the case of a osmosis, the species diffusing is water. The concentration of glucose is only interesting to the extent that you can derive the activity (approximated by concentration) of the water. Given the question, as written, infering the relative concentration of water inside and outside the cell is only possible if glucose is the only solute in the system. Unless that is known to be true, it is impossible to know from the problem statement which direction will the water diffuse. |
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Quoted: Quoted: Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Its a trick question. If there is a simple membrane the correct answer would be B or C. Depending on the specific conditions. However, cell membranes are not simple membranes. They have active effluent and affluent protein pumps within the cell walls. Glucose happens to be one of those molecules that are actively transported by cells as glucose is used for energy. So technically, the cell could actively pump in or out the glucose if it doesnt need it and cause an artificial concentration gradient. So the answer as it is written is E. No, it is C. The cell doesn't measure the glucose concentrations then pump one way or another. Water searching for equilibrium is a physical property and will happen. Besides, the cell pumps would be a lot slower than osmosis through a semipermeable membrane. |
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Ok Guys/Gals The wife unit has a Anatomy final exam for Nursing school and the instructor was kind enough to give them a few of the questions that will be on the exam. Need some help with an answer (could possibly be a flawed question?) Here goes - If the concentration of glucose in water outside the cell is higher than the concentration inside the cell then: a) Water will tend to enter the cell by osmosis b) Glucose will tend to enter the cell by osmosis c) Water will tend to leave the cell by osmosis d) glucose will tend to leave the cell by osmosis e) None of the above. Please don't answer unless you know what you are talking about (unless of course you just want to be a smart ass and post something other than an answer. Attempting to edit to add "pie" as an option due to my miserable failure at life. I humbly apologize for the error of my ways and will see If I can talk the wife unit into making you all bacon sandwiches. Guess what? - I'm too stupid to figure out how to edit the poll options. This is on an anatomy exam for a nursing school final? BRB BEING A NURSE. 
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