42) Carrier molecules located within the A) cytoplasm. B) plasma membrane. C) transport : 1200440

42) Carrier molecules located within the
A) cytoplasm.
B) plasma membrane.
C) transport : 1200440.


42) Carrier molecules are located within the

A) cytoplasm.

B) plasma membrane.

C) transport vesicles.

D) lipid droplets.

E) chromosomes.

43) Which of these is an example of carrier-mediated transport?

A) an ion exchange pump

B) facilitated diffusion

C) endocytosis

D) exocytosis

E) pinocytosis

44) How does facilitated diffusion differ from simple diffusion?

A) Facilitated diffusion expends no ATP.

B) Facilitated diffusion moves molecules from an area of higher concentration to lower concentration.

C) The rate of transport cannot increase indefinitely in facilitated diffusion.

D) The concentration gradient is never eliminated in facilitated diffusion.

E) Facilitated diffusion is independent of carrier molecules.

45) Which molecules interact with solutes by binding to them and transporting them across the cell membrane?

A) integral proteins

B) lipid transporters

C) carrier proteins

D) peripheral proteins

E) glycolytic transporters

46) A cell must expend energy to accomplish substance movement during ________.

A) diffusion

B) active transport

C) passive transport

D) osmosis

E) filtration

47) ________ processes move substances across a membrane regardless of concentration gradients.

A) Active transport

B) Filtration

C) Passive transport

D) Diffusion

E) Osmotic



42) Carrier molecules located within the
A) cytoplasm.
B) plasma membrane.
C) transport : 1200440

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