Which of the following statements correctly describes calcium's role in exocytosis?
A) Calcium has no role in exocytosis.
B) Calcium stimulates autoreceptors.
C) Calcium frees synaptic vesicles from their protein anchors.
D) Calcium moves neurotransmitter molecules back into synaptic vesicles.

Question

Quizplus · Accepted Answer

Calcium binds to proteins on synaptic vesicles, causing them to release from their protein anchors and move towards the plasma membrane. This results in exocytosis, where the neurotransmitter is released into the synaptic cleft.

Which of the Following Statements Correctly Describes Calcium's Role in Exocytosis