The rate of diffusion will increase as

Question

The diagram shows the rate of diffusion into a cell using carrier proteins.







A.  the number of glucose molecules decreases.

B.  the number of glucose molecules increases.

C.  temperature decreases.

D.  pH rises.



Clarify Question

· What is the key concept addressed by the question?

· What type of thinking is required?



Gather Content

· What do you know about factors that affect the rate of diffusion? 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?

Answer 1

B.  the number of glucose molecules increases.

Clarify Question
· What is the key concept addressed by the question?
        o The question asks about factors that affect the rate of diffusion.
· What type of thinking is required?
        o You are being asked to apply your knowledge about factors that affect the rate of diffusion.

Gather Content
· What do you know about factors that affect the rate of diffusion? What other information is related to the question?
        o Diffusion relies on the rapid movement of molecules. This occurs most rapidly in warmer temperatures when the molecules are moving faster. The greater the difference in concentration across a membrane, the larger the gradient and the faster molecules will diffuse.
 
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
        o Diffusion will increase as the concentration of glucose increases. A decrease in temperature will decrease the rate of diffusion. pH should not affect the rate of diffusion of glucose since it is not charged.
 
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 apply your knowledge about factors that affect the rate of diffusion. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you think that as glucose levels decrease diffusion would increase? Did you think that lower temperature would increase the rate of diffusion.