Question

Polar molecules cannot pass
theough non- polae lipid bilayer. So,
they require carrier proteins, Why?​

Answer 1

heyyy mate...........

Charged molecules have polarity, just like the water. Lipid bilayer membrane is made of polar phosphate head and nonpolar lipid part. Even though the head is hydrophilic the tail part is hydrophobic, which means it repels the water. So, when a polar/charged molecule tries to pass through the membrane it is repelled, hence it needs a carrier protein.    

hope it helps....

Answer 2

Explanation:

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