Which of the following statements is a plausible description of some aspect of protein secretion from prokaryotic cells?
A)Prokaryotes are unlikely to be able to secrete proteins because they lack an endomembrane system.
B)The mechanism of protein secretion in prokaryotes is probably the same as that in eukaryotes.
C)Proteins that are secreted by prokaryotes may be synthesized on ribosomes that are associated with the cytoplasmic surface of the plasma membrane.
D)In prokaryotes,the ribosomes that are involved in the synthesis of secreted proteins are located outside of the cell.

Question

Quizplus · Accepted Answer

Prokaryotes lack an endomembrane system, which means that they cannot secrete proteins in the same way as eukaryotes. However, proteins that are secreted by prokaryotes may be synthesized on ribosomes associated with the cytoplasmic surface of the plasma membrane, which makes choice C a plausible description. Choice B is incorrect because the mechanism of protein secretion in prokaryotes is different than in eukaryotes. Choice D is incorrect because ribosomes involved in the synthesis of secreted proteins are typically located within the cell, not outside of it.

Which of the Following Statements Is a Plausible Description of Some