Question

class 9 cbse
chapter 5 The Fundamental Units Of Life...

1. deference between cell wall and cell membrane.
2. what is the function of cell membrane ?
3. what is the function of cell wall ?

please give me answers of all questions.......​

Answer 1

Answer:

Cell wall is completely permeable to ordinary macromolecules . Cell membrane is selectively permeable or semi- permeable allowing only certain molecules to pass through.

first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.

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. It provides the cell with both structural support and protection, and also acts as a filtering mechanis

Answer 2

Answer :sorry the handwriting is not good