Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?
A) Prokaryotes cannot secrete proteins because they lack an endomembrane system.
B) Proteins secreted by prokaryotes are likely synthesized on ribosomes bound to the cytoplasmic surface of the plasma membrane.
C) The mechanism of protein secretion in prokaryotes is probably the same as that in eukaryotes.
D) Prokaryotes cannot secrete proteins because they lack rough endoplasmic reticulum.

Question

Quizplus · Accepted Answer

Prokaryotes do not have an endomembrane system like eukaryotes, but they can still secrete proteins. In prokaryotes, proteins that are to be secreted are synthesized on ribosomes bound to the cytoplasmic surface of the plasma membrane. The proteins are then transported across the membrane and released outside the cell. The mechanism of protein secretion in prokaryotes is different from that in eukaryotes.

Which of the Following Statements Correctly Describes Some Aspect of Protein