Question

An endoplasmic reticulum is rough or smooth, depending on the presence of

A. a nuclear membrane.
B. mitochondria.
C. ribosomes.
D. proteins.

Answer 1

C. ribosomes.
Presence of ribosomes makes endoplasmic reticulum look rough.

Answer 2

(C). ribosomes.

Step-by-step explanation:

The ER (endoplasmic reticulum) can be defined as an eukaryotic cell organelle, which makes interconnected network of membrane-bound, flattened sac-like structures. These structures are known as cisternae

The endoplasmic reticulum can be divided into two types, on the basis of presence or absence of ribosomes. The smooth ER does not ribosomes on its surface, while rough ER carries ribosomes on its surface. These ribosomes are known as protein-manufacturing units of cells.

Thus, the correct answer is option (C).