Question

Which of the follwing statements are not true?

• A. The cell membrane is made up of cellulose.
• B. The cell wall gives rigidity to the cell.
• C. The cell membrane is present in both animal and plant cells.
• D. The cell wall is freely permeable.

Answer 1

The correct option is A

The cell membrane is made up of cellulose.

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid and it gives a definite shape to the cell. In the algae and higher plants, it consists mainly of cellulose.