10
Question
why carrier proteins are required for transfer of polar molecules through the bilayered lipid
why carrier proteins are required for transfer of polar molecules through the bilayered lipid
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Solution
Transport across plasma membrane:
1. Passive transport − It does not require energy. Hence, neutral solute moves by diffusion, along the concentration gradient. Water moves through osmosis. Polar molecules cannot move through the lipid bilayer. It needs a Facilitated diffusion, and hence carried out by carrier proteins.
2. Active transport − It requires energy for transport against the concentration gradient.
Transport across plasma membrane:
1. Passive transport − It does not require energy. Hence, neutral solute moves by diffusion, along the concentration gradient. Water moves through osmosis. Polar molecules cannot move through the lipid bilayer. It needs a Facilitated diffusion, and hence carried out by carrier proteins.
2. Active transport − It requires energy for transport against the concentration gradient.
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