Question

part e
a vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. this statement describes ______.
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options: active transport, endocytosis, simple diffusion, exocytosis, facilitated diffusion
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Explanation:

Exocytosis is the process where a vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. Active transport involves moving substances against concentration gradient (not via vesicle fusion). Endocytosis is taking substances into the cell via vesicle formation. Simple and facilitated diffusion are passive transport of small molecules across the membrane without vesicle fusion. So the correct process is exocytosis.

Answer:

exocytosis