Question

Match the molecule with type of transport it uses to move across the cellular membrane. Osmosis, simple diffusion or facilitated diffusion

Oxygen

Carbon dioxide

Water

glucose

Answer 1

Answer

1) Oxygen : Simple diffusion

• Gases moves by simple diffusion across the cell membrane.
• It helps supplying oxygen to body tissues.

2) Carbon dioxide : Simple diffusion

• Gases moves by simple diffusion across the cell membrane.
• It helps in removing carbon dioxide generated during metabolic processes.

3) Water : Osmosis

• Water moves from area of lower solute concentration to area of higher solute concentration (from area of high water content to area of low water content) across a semipermeable membrane.

4) Glucose : Facilitated diffusion

• Protein carrier for glucose molecules are GLUT.
• These transporters facilitate glucose diffusion into the cell.