Question

____ is called the brain/control room of the cell.

• A. Nucleus.
• B. Lysosome.
• C. Mitochondria.
• D. Vacuoles.

Answer 1

The correct option is A

Nucleus.

The correct option is A.

Explanation of the correct option:

1. The nucleus is known as the cell's control center because it regulates gene expression and facilitates DNA replication during the cell cycle. With an average diameter of 6m, the nucleus is the largest structure of animal cells.
2. The nuclear membrane encloses the nucleus completely and is composed of two cellular membranes, an inner and outer membrane.
3. The outer membrane is joined to the endoplasmic reticulum membrane. The inner membrane is held together by proteins that are specific to the nucleus. The nuclear lamina is a mesh structure found on the nucleus's internal structure.
4. It gives the nucleus mechanical strength.

Explanation of the incorrect options:

Option B:

1. Lysosomes are sphere-shaped cell organelles found in eukaryotic animal cells that are capable of breaking down a wide range of biomolecules.
2. They're also known as the suicidal bags of the cell.

Option C:

1. Mitochondria are known as the "powerhouse of cells" because they are the primary site of energy release in aerobic respiration.
2. A mitochondrion is a double membrane-bound organelle found in the cytoplasm of most Eukaryotic organisms' cells.
3. This tiny energy-generating center digests nutrients and releases chemical energy in the form of ATP- Adenosine Triphosphate in the cell.

Option D:

1. Vacuoles are essentially storage bubbles found in plant cells.
2. They even store food or various types of nutrients that cells require to survive.
3. Vacuoles are also fighters because they protect cells by containing bubbles and can even store waste material, thereby protecting the rest of the cell from contamination.

Final answer: Nucleus is called the brain/control room of the cell.