Question

The most important function of cell membrane is that it: (a) controls the entry and exit of materials from cells. (b) controls only the entry of materials into cells. (c) controls only the exit of materials from cells. (d) allows entry and exit of materials without any control. Identify the correct statement: (a) Tissue is a group of similar cells. (b) An organ consists of similar cells. (c) Vacuoles are not found in plant cells. (d) Prokaryotes have a well-defined nucleus Under a microscope Paheli observes a cell that has a cell wall but no distinct nucleus. The cell that she observes is: (a) plant cell (b) an animal cell (c) a nerve cell (d) a bacterial cell

Answer 1

The cell membrane controls the entry and exit of materials from cells. A cell with a cell wall but no distinct nucleus is a bacterial cell.

Step-by-step explanation:

The most important function of the cell membrane is (a) to control the entry and exit of materials from cells. It acts as a selective barrier, allowing only certain substances to pass through and maintaining the internal conditions of the cell. For example, nutrients can enter the cell while waste products are expelled. This process is essential for the cell's survival.

Regarding the second part of the question, a cell that has a cell wall but no distinct nucleus is most likely a bacterial cell. Bacterial cells are prokaryotic and lack a defined nucleus. They have a cell wall for structural support and protection.

Learn more about Cell membrane function