Exocytosis allows granular content to be released into extracellular fluid by:
A) Engulfing and ingesting fluid and proteins for transport
B) Killing, degrading, and dissolving harmful microorganisms
C) Removing cellular debris and releasing synthesized substances like hormones
D) Destruction of particles by lysosomal enzymes for secretion
Ans: C
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In exocytosis, a secretory granule fuses to the inner cell membrane to form an opening, allowing granule contents to be released. The granule contains cellular debris and synthesized substances such as hormones, which it releases into the extracellular fluid. Phagocytosis and pinocytosis—types of endocytosis—function to engulf, kill, and present particles to lysosomal enzymes for degradation.
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