- What regulates the movement of molecules through the cytoplasmic
membrane?
(a) Channel proteins
(b) Transmembrane proteins
(c) Peripheral proteins
(d) Fluid proteins - What forms channels in the cytoplasmic membrane and permits the flow
of molecules through the cytoplasmic membrane?
(a) Integral proteins
(b) Transmembrane proteins
(c) Peripheral proteins
(d) Lipoproteins - What is it called when a substance moves from a higher-concentration
region to a lower-concentration region?
(a) Osmosis
(b) Cytoplasmic diffusion
(c) Facilitated diffusion
(d) Simple diffusion - What is it called when water moves from a higher region of concentra-
tion to a region of lower concentration?
(a) Osmosis
(b) Cytoplasmic diffusion
(c) Facilitated diffusion
(d) Simple diffusion - Passive transport is the movement of a substance across the cytoplasmic
membrane against the gradient by using energy provided by the cell.
(a) True
(b) False - What are the two types of exocytosis?
(a) Facilitated diffusion and passive transport
(b) Phagocytosis and pinocytosis
(c) Hydrolysis and cytosol
(d) None of the above
(^254) Final Exam
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