Question

What part of the cell serves as the intracellular highway?

• A. Endoplasmic reticulum
• B. Golgi apparatus
• C. Cell membrane
• D. Mitochondria

Answer 1

The correct option is A

Endoplasmic reticulum

The correct option is A

Explanation of the correct option:

1. The endoplasmic reticulum is a network of membranes found throughout the cell and connected to the nucleus.
2. The endoplasmic reticulum serves to process, package, and export protein.
3. It is an essential part of the protein sorting highway, which includes the correct folding of proteins and marking with amino acids.
4. ER is of two types, Rough endoplasmic reticulum, and Smooth endoplasmic reticulum.
5. The rough endoplasmic reticulum synthesizes protein as it has ribosomes on its surface, and the smooth endoplasmic reticulum synthesizes phospholipids.

Explanation of the incorrect option:

Option B:

1. The golgi body is a cell organelle that helps process and package proteins and lipid molecules.
2. It also synthesizes lysosomes.

Option C:

1. The plasma membrane or cell membrane is the outermost layer in the animal cell and the second outermost layer in the plant cell.

Option D:

1. Mitochondria is a bilayer organelle and powerhouse of the cell.

Final answer: Endoplasmic reticulum is a part of the cell that serves as the intracellular highway.