Q.
Similarity between simple diffusion and facilitated diffusion is:
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a
Both do not use energy or ATP for transport of substances.
b
Both show uphill transport
c
Both require special membrane proteins
d
Both do not require the presence of concentration gradient
answer is A.
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Detailed Solution
Simple diffusion and facilitated diffusion require the presence of a concentration gradient and transport substances downhill.Simple diffusion does not require ATP and special membrane proteins.Facilitated diffusion does not require ATP but requires special membrane proteins for the transport of substances.
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