Cellulose Cell Wall

Question 1

Can substances pass in and out

Answer 1

Yes, the cell wall is completely permeable, so substances can pass into and out of the cell through the cellulose wall.

Question 2

How does the cell wall give the cell shape

Answer 2

The contents of the cell press against the cell wall making it rigid. This supports both the individual cell and the plant as a whole. The cell wall also acts as a defence mechanism, protecting the contents of the cell against invading pathogens. All plant cells have cellulose cell walls.