Question

When a red stain is added to a culture containing both living and dead cells, only the dead cells
take up the stain.
Which structure prevents the stain entering the living cells?
A
cell membrane
B
cell wall
C
cytoplasm
D
vacuole​

Answer 1

Answer:

Option A

Cell membrane...

Answer 2

Answer:

cell wall

Explanation:

cell wall because it is the outer most layer of cell and it's function is filtering