Berne and Levy Physiology 8th Edition KoeppenTest Bank

Koeppen: Berne and Levy Physiology, 7th Edition

Chapter 01: Principles of Cell

FunctionTest Bank

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 Na+

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. Na+

symporter

E. Na+

antiporter

ANS: D

3. A membrane permeable by only Na+

separates two compartments containing

Na2SO4,shown as follows: