Question

The rough endoplasmic reticulum has _________ attached to it.

• A. Ribosomes
• B. DNA
• C. Lipids
• D. Protein

Answer 1

The correct option is A

Ribosomes

Explanation for correct option:

Option A: Ribosomes:

1. The rough endoplasmic reticulum has ribosomes attached to it.
2. The endoplasmic reticulum is a double-membrane-bound organelle within a cell.
3. It is of two types- smooth endoplasmic reticulum and rough endoplasmic reticulum.
4. The rough endoplasmic reticulum is the one that has ribosomes attached to it. It is mainly found in cells that synthesize proteins actively.
5. The smooth endoplasmic reticulum is free of ribosomes and has a smooth surface and is mainly found in cells that are synthesizing lipids and steroids.

Explanation for incorrect options:

Option B:

A nucleic acid molecule that carries genetic information is known as DNA.

Option C:

A class of organic compounds that are fatty acids or fatty acid derivatives are known as lipids.

Option D:

A class of organic compounds composed of long chains of amino acids are known as proteins.

Final answer: The rough endoplasmic reticulum has ribosomes attached to it.