Discussion Forum : Transport In Plants
Question - Porins are the proteins that form huge pores in the membranes
Options:
A .  True
B .  False
C .  Hypertonic solution and water lost from cell gap
D .  Gases
Answer: Option A
:
A
In the outer membranes of plastids, mitochondria and some bacteria porins are present. They allow molecules, upto size of small proteins to pass through.

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