Rate of diffusion across cell membrane depends upon
Options:
A . Size of the substances
B . Solubility in lipids
C . Both a & b
D . Living system
Answer: Option C : C The diffusion rate depends on the size of the substances and smaller substances diffuse faster. Diffusion of any substance across the cell membrane also depends upon its solubility in lipids. It is not dependent on the living system itself.
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