Question

Please help me as soon as possible!!!!

Answer 1

Answer:

The answers are:

Cell Wall:

1. Gives plant cell its shape
2. Rigid

Cell Membrane:

1. Acts like a skin.
2. More selectively controls what goes in and out of cell.
3. Is not rigid.

Explanation:

• The question entails the structural and functional differences of the cell wall and cell membrane.
• The cell wall is a rigid and strong layer that covers the outside of plant cells. It is absent in animal cells.
• The cell wall is largely composed of cellulose, hemicellulose and pectin in plants and peptidoglycan in bacteria. The cell membrane, on the other hand, is comprised of a lipid bilayer.
• The strong and complex network of cellulose renders the cell wall rigid; whereas, as it is made up of lipid bilayer, the cell membrane is flexible and elastic.
• Unlike the cell membrane, which allows the movement of selective substances, the cell wall does not allow any substances to pass through.