A cell with an abundance of free ribosomes is most likely
A) producing primarily proteins for secretion.
B) producing primarily cytoplasmic proteins.
C) producing primarily cell wall or extracellular matrix components.
D) producing primarily an abundance of new membranes.
E) enlarging its vacuole.

Question

Quizplus · Accepted Answer

Free ribosomes are not attached to the endoplasmic reticulum and are found in the cytoplasm. Cells with an abundance of free ribosomes are likely producing proteins that function within the cytoplasm, such as enzymes and structural components. Therefore, choice B is the best answer. Choices A and C are incorrect because proteins for secretion or extracellular matrix components are typically produced on ribosomes attached to the endoplasmic reticulum. Choice D is incorrect because new membranes would be produced on ribosomes attached to the endoplasmic reticulum. Choice E is incorrect because vacuoles are not typically proteins and thus would not require an abundance of free ribosomes.

A Cell with an Abundance of Free Ribosomes Is Most