Insulin stimulates an increase in number of glucose carrier proteins at a cell membrane’s surface. What effect will insulin have on cell function? Choose all that apply.
_____ An increase in insulin, which will increase the diffusion rate.
_____ ATP amounts needed for this transport will increase.
_____ Low insulin levels will decrease the number of available carrier proteins.
_____ Lack of membrane receptors for insulin will decrease amount of glucose taken in.
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about glucose transport? What other information is related to the question?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
__X__ An increase in insulin, which will increase the diffusion rate.
_____ ATP amounts needed for this transport will increase.
__X__ Low insulin levels will decrease the number of available carrier proteins.
__X__ Lack of membrane receptors for insulin will decrease amount of glucose taken in.
Clarify Question
· What is the key concept addressed by the question?
o The question asks about glucose transport.
· What type of thinking is required?
o You are being asked to analyze statements about glucose transport.
Gather Content
· What do you know about glucose transport? What other information is related to the question?
o Passive transport of glucose indicates that glucose is moving down its concentration gradient through the GLUT transporter. This means that it does not require ATP or cotransport of water. The GLUT transporter is a protein that makes a pore through the membrane of cells allowing glucose to enter. The number of glucose transporters on the surface of the cell is controlled in part by insulin. Insulin binds to receptors on the surface of the cell and causes more transporters to be present on the cell, increasing the rate of glucose diffusion into the cell.
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
o As insulin increases, more GLUT transporters appear on the surface of the cell, increasing the rate of glucose diffusion into the cell. If insulin levels or the number of insulin receptors drop there will be no increase in GLUT transporters on the surface of the cell and glucose uptake will decrease.
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
o This question asked you to analyze statements about glucose transport. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you think that ATP was necessary for glucose diffusion into a cell? Did you think that the insulin receptor was not needed for glucose uptake?
You might also like to view...
Glucocorticoids do which of the following?
A) promote the immune response B) promote the release of fatty acids C) increase blood glucose levels D) increase insulin production
In terms of membrane lipids, the plasma membranes of archaeons are more similar to those of the eukaryotes than to membranes of bacteria.
Answer the following statement true (T) or false (F)
The size of the motor area in the brain for any specific body part is relative to:
a. the rest of the body.
b. its position in the body. c. the complexity of its movements. d. the number of muscles it contains. e. the area of the brain that controls it.
Which sequence of events is required for the brain to interpret sound?I.Vibration of the basilar membrane relative to the tectorial membrane causes cilia on hair cells to bend and triggers depolarization.II.Hair cells stimulate the production of action potentials in sensory neurons that project to the brain.III.Ganglion cell axons transmit action potentials to the occipital lobe.
A. II then I B. III then I then II C. I then II D. III then I E. I then II then III