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Berne and Levy Physiology 8th Edition Koeppen
Koeppen: Berne and Levy Physiology, 7th Edition
Chapter 01: Principles of Cell
Function
Multiple Choice
1. The subcellular structure that degrades proteins is called the:
A. Tight junction
B. Mitochondria
C. Lysosome
D. Plasma membrane
E. Ribosome
ANS: C
2. An experiment is done to measure the uptake of an amino acid into a cell. The following
data are obtained:
If N
is removed from the extracellular bathing solution, or if a drug is added that prevents the
cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is
markedly reduced. According to this information, which of the followingmechanisms is
probably responsible for the transport ofthe amino acid into the cell?
A. Passive diffusion through the lipid bilayer
B. Uniporter
C. Transport ATPase
D. N
symporter
E. N
antiporter
ANS: D
3. A membrane permeable by only N
separates two compartments containing
Na2SO4,shown as follows:
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