Question

uestions
1. How do substances like Co, and
water move in and out of the cell?
Discuss
2. Why is the plasma membrane
called a selectively permeable
membrane?​

Answer 1

1) The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell.

2)The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.

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