Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 12, Problem 3P
Interpretation Introduction
Interpretation:
The average distance traversed by a membrane lipid needs to be determined.
Concept introduction:
The average distance traversed by a membrane lipid is calculated by the square root of the product of diffusion coefficient and time.
The average distance is calculated as
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No free lunch. Explain why maintaining a high concentration of CO2
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Cells and Membranes
a. Give two examples of molecules that can pass through cell membranes without the need for energy, why can they do so?
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transport from outside the cell to the cytoplasm, involving a membrane carrier (Cmemb), a
substrate (Sin) (growth factor etc.) to be carried and released (Sout) into the cytoplasm.
a) What kind of feedback mechanism is restricting this process?
b) Construct a Forrester Diagram
Membrane Transport Carrier, C:C, +S.
memb
k₁
k_₁
C memb
memb
+ S
out
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b)
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