Question

The cell is surrounded by a membrane called

• A. Cell wall
• B. Cell membrane
• C. Cytoplasm
• D. Nuclear membrane

Answer 1

The correct option is B

Cell membrane

The correct option is option (B):

Explanation for the correct option:

1. All living things are made up of tiny compartments called cells.
2. Hence they are considered as the structural and functional units of living things.
3. Cell membrane is also called plasma membrane.
4. It is a very thin skin covering of a cell.
5. It protects the cell and also provides shape to the cell.
6. It allows materials to enter and leave the cell.

Explanation for the incorrect options:

Option (A):

Cell wall is an extra outer covering that surrounds the plant cell.It is formed of a tough and non-living polysaccharide called cellulose.

Option (C):

Cytoplasm is the jelly-like semi-fluid material which fills the gap between the nucleus and plasma membrane. All life functions take place in cytoplasm.
Option (D):

Nuclear membrane is the outermost covering layer of nucleus. It separates nucleus from cytoplasm.

Final answer: The membrane which surrounds the cell is called cell membrane.