Question

How do substances such as carbon dioxide and water move in and out of the cell?

Answer 1

Movement of carbon dioxide:

1. ​The movement of respiratory gases in and out of the cell occurs with the help of diffusion.
   
2. This is because the cell membrane allows the carbon dioxide to move freely inside and outside the cell.
   

Movement of water:

1. The water moves through the cell membrane with the help of osmosis.
   
2. ​This movement is allowed by the membrane based on the concentration gradient where water moves from a region of low solute concentration to high solute concentration.