Question

Transporting channels of the cell are called

• A. Mitochondria
• B. Endoplasmic reticulum
• C. Golgi complex
• D. Lysosomes

Answer 1

The correct option is B

Endoplasmic reticulum

The correct option is option B.

Explanation of the correct option:

1. The endoplasmic reticulum (ER) is a network of membrane-bound tubules and sacs (cisternae) that extend from the nuclear envelope through the cytoplasm.
2. There are two types of endoplasmic reticulum: Rough endoplasmic reticulum and Smooth endoplasmic reticulum.
3. Ribosomes are connected to the rough endoplasmic reticulum, which aids in protein synthesis.
4. The endoplasmic reticulum plays a variety of roles in cells.
5. One of their primary tasks is to serve as a transportation channel.
6. Secretory proteins, most of which are glycoproteins, are transported through the endoplasmic reticulum membrane.
7. One of the functions of the ER is to act as a channel for material transport between different regions of the cytoplasm or between the cytoplasm and the nucleus.
8. The ER also serves as a cytoplasmic scaffold that provides a surface for some of the cell's biochemical activities.

Explanation of the incorrect options:

Option A:

1. Mitochondria are membrane-bound organelles found in the cytoplasm of all eukaryotic cells that create adenosine triphosphate (ATP), the cell's primary energy source
2. Controls the cell's metabolic activities.

Option C:

1. The Golgi complex is a kind of organelle found in eukaryotic cells.
2. The Golgi complex modifies, sorts, and packages proteins for secretion.

Option D:

1. Lysosomes are sphere-shaped sacs that contain hydrolytic enzymes that may degrade a wide range of biomolecules.
2. Lysosomes' primary role is waste digestion and elimination.

Final answer: Transporting channels of the cell are called endoplasmic reticulum.