Which of these statements is correct for smooth endoplasmic reticulum?
A)It is most abundant in cells specialized for protein secretion.
B)It gives rise to transport vesicles containing newly synthesized molecules wrapped in a layer of smooth ER membrane.
C) It consists of stacks of relatively flattened sacs called cisternae.
D) It has many ribosomes.

Question

Quizplus · Accepted Answer

Smooth endoplasmic reticulum gives rise to transport vesicles containing newly synthesized molecules wrapped in a layer of smooth ER membrane. It is not necessarily more abundant in cells specialized for protein secretion (A). The stacked structure described in C is characteristic of the Golgi apparatus, not the smooth ER. Unlike the rough ER, the smooth ER has few or no ribosomes (D).

Which of These Statements Is Correct for Smooth Endoplasmic Reticulum