Question

1. what is the role of the plasma membrane in the cell? 2. in plants, what is outside the cell membrane? 3. why is the cytoplasm compared to city streets? what happens there? 4. what does the nucleus do in the cell, and why is it called \city hall\? 5. what is the nucleoluss function, and where is it located?

Explanation:

1. The plasma - membrane is a selective barrier. It controls the movement of substances in and out of the cell, maintaining cell homeostasis.
2. In plants, outside the cell membrane is the cell wall. It provides structural support and protection to the plant cell.
3. The cytoplasm is like city streets as it is the site where many cellular activities occur. Organelles move around in the cytoplasm, and chemical reactions take place there.
4. The nucleus contains the cell's genetic material (DNA). It controls cellular activities by regulating gene expression, similar to how city hall manages a city's operations.
5. The nucleolus is located within the nucleus. Its main function is to produce and assemble ribosome components.

Answer:

1. It is a selective barrier that controls substance movement in and out of the cell to maintain homeostasis.
2. The cell wall.
3. Because it is the site of many cellular activities; organelles move and chemical reactions occur there.
4. It contains DNA and controls cellular activities; it is called "City Hall" as it manages cell - operations like city hall manages a city.
5. Its function is to produce and assemble ribosome components; it is located within the nucleus.