Question

Which the following descriptions would be an example of exocytosis?

A) a macrophage imbibing its surrounding tissue fluid and nutrients
B) acetylcholine released from a neuron
C) choline's reabsorption by a neuron
D) bacteria that is engulfed by a white blood cell
E) a low-density lipoprotein that becomes internalized by a hepatic cell

Answer 1

Exocytosis is the process of exporting material out of a cell using vesicles. It involves the fusion of vesicles with the plasma membrane and the release of their contents. Examples of exocytosis include the secretion of neurotransmitters, digestive enzymes, and hormones.

Step-by-step explanation:

Exocytosis is the process by which a cell exports material out of the cell using vesicles. It involves the fusion of vesicles with the plasma membrane, releasing their contents to the exterior of the cell. Examples of exocytosis include the secretion of neurotransmitters in synapses between neurons, the release of digestive enzymes by cells in the stomach and pancreas, and the secretion of hormones by endocrine cells.