Question

Explain how the exchange of gases occurs across the plasma membrane of cells
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Answer 1

Answer:

The basic mechanism of gas exchange is diffusion across a moist membrane. Diffusion is the movement of molecules from a region of greater concentration to a region of lesser concentration, in the direction following the concentration gradien

Answer 2

Plasma membrane is also referred to as semi-permeable membrane as it allows movement (entry and exit) of specific substances through it. Movement through plasma membrane is possible through the following phenomena i.e. osmosis. It is defined as the movement of water from a region of of higher concentration towards the region of lower concentration through a selectively permeable membrane.