Serine Diffusion


Q.

Serine is an amino acid found in many foods.  Serine diffuses from the digestive tract into the cells lining the digestive tract through serine transporters.  A team of physiologists measured the serine diffusion rate from the digestive tract into the cells of several different mice.  Surprisingly, they found that the serine diffusion rate was greatest in the mouse that already had the highest serine concentration in its cells.

Identify as many ways as you can that could cause the greatest serine diffusion rate in the mouse that already had the highest concentration of serine in its cells.

Explain how the ways you identified could cause the greatest serine diffusion rate in the mouse that already had the highest concentration of serine in its cells.

Audiences:

Undergraduate

Topics:

Physiology

Special Instructions

This question contains two parts. Both will be used twice for analysis of both Gradient and Resistance ideas. 

Associated Publications

No Associated Publications


Question Instructions

We recommend that you administer these questions as homework and preface the question with these instructions for students:

"For the following question, please respond to the best of your knowledge and using only the information in the question and what you know. Please do not refer to any outside sources (textbooks, notes, internet, etc.). Any reasonable attempt to answer the question will be awarded full credit."

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