Question

give an example of diffusion across plasma membrane

Answer 1

According to the principle of diffusion, Carbon dioxide moves from a region of hgher concentration (inside the cell) towards a region of lower concentration (outside the cell). Similarily, oxygen enters the cell by diffusion when the concentration of oxygen inside the cell is low as compared to its surroundings.

Answer 2

An example of diffusion across the plasma membrane is the movement of oxygen.

• Active molecules can transfer along the cytosol of an active cell, and few molecules often spread through the plasma membrane.
• As per the theory of diffusion, Carbon dioxide travels from a higher-concentration region which is inside the specific cell to a lower-concentration region, which is outside the cell.  
• Similarly, when the effective concentration of oxygen within the cell is low relative to its surroundings, adequate oxygen typically enters the cell through diffusion.