Introduction to Physiology
Quick practice
Question 1 of 5
You are an internal medicine resident doctor in a tertiary care center. Your intern asks you about the importance of cell membranes in the absorption of the drugs that he is administering to a patient. All of the following are true about the cell membrane except:
A
The lipid layer in the middle of the membrane is impermeable to carbon dioxide.
B
Each layer of the lipid bilayer is one molecule thick.
C
It is an elastic structure 7.5 to 10 nanometers thick.
D
25% of the cell membrane is composed of phospholipids.
Concepts
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