Ok so there's a lot i'm gonna ask. but please help lol.
1. the movement of glucose across the cell membrane through facilitied diffusion is a form of passive transport because...
a. a transport protein is needed
b. glucose is transported according to concentration gradient
c. no cellular energy is spent
d. intramembrane receptors are used
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2. this process used proteins to move molecules against concentration gradient:
a. passive transport
b. pinocytosis
c. active transport
d. endocytosis
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3. unlike passive transport, active transport requires...
a. concentration gradient
b. energy from the cell
c. vesicles
d. diffusion