Question

An active transport process by which a vesicle moves a large substance out of the cell is known as __________.

osmosis
endocytosis
exocytosis
diffusion

Answer 1

I'm pretty sure it is exocytosis. Because exocytosis transports vesicles out of the cell through the plasma membrane. Remember it as "exo" = exit.

Answer 2

C. Exocytosis

Step-by-step explanation:

The first thing we notice is that the question says "active transport". Looking at the answer choices, we see that "osmosis" and "diffusion" are options.

However, remember that osmosis (the diffusion of water from high to low concentration) and diffusion (the movement of particles from high to low concentration) are both passive transport; in other words, they don't require an input of energy. So eliminate them.

Now look at endocytosis and exocytosis. "Endo" means "inner", so "endocytosis" means the cell is engulfing a substance and bringing it inside. However, we want the process where a substance is moved out.

"Exo" means "out", so "exocytosis" means to expel something. That matches here, so our answer is C.

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