The endoplasmic reticulum
A)is found in both a rough and a smooth form.
B)is the inner membrane of the mitochondria.
C)is responsible for packaging proteins for transport.
D)manufactures ATP.
E)is found in the nucleus as well as in the cytoplasm.

Question

Quizplus · Accepted Answer

The endoplasmic reticulum is found in both a rough form (with ribosomes attached to its surface) and a smooth form (without ribosomes). It is responsible for protein synthesis, folding, and modification, as well as lipid and carbohydrate metabolism. It is not the inner membrane of mitochondria, nor does it manufacture ATP. It is not found in the nucleus, but only in the cytoplasm.

The Endoplasmic Reticulum