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Set 1 Principles Of Cell Function

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Question 1

(Multiple Choice)

Free
Osmosis is:

A)The active transport of water
B)The number of solute particles in 1 kg of water
C)The diffusion of water across cell membranes
D)The defined as the weight of a volume of a solution divided by the weight of an equivalent volume of distilled water
E)The amount of a substance relative to its molecular weight

Answer

Question 2

(Multiple Choice)

Free
The subcellular structure that degrades proteins is called the:

A)Tight junction
B)Mitochondria
C)Lysosome
D)Plasma membrane
E)Ribosome

Answer

Question 3

(Multiple Choice)

Free
An experiment is done to measure the uptake of an amino acid into a cell.The following data are obtained: An experiment is done to measure the uptake of an amino acid into a cell.The following data are obtained:   If Na<sup>+</sup> 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 following mechanisms is probably responsible for the transport of the amino acid into the cell? A)Passive diffusion through the lipid bilayer B)Uniporter C)Transport ATPase D)Na<sup>+</sup> symporter E)Na<sup>+</sup> antiporter 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 following mechanisms is probably responsible for the transport of the amino acid into the cell?

A)Passive diffusion through the lipid bilayer
B)Uniporter
C)Transport ATPase
D)Na+ symporter
E)Na+ antiporter

Answer