Question

how does polar molecules move across plasma membrane explain​

Answer 1

Answer:

The plasma membrane is selectively permeable; hydrophobic molecules and small polar molecules can diffuse through the lipid layer, but ions and large polar molecules cannot. The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others.

Explanation:

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Answer 2

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how does polar molecules move across plasma membrane explain?

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➺The plasma membrane is selectively permeable; hydrophobic molecules and small polar molecules can diffuse through the lipid layer, but ions and large polar molecules cannot. The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others.

➺The channel proteins act like doors through the cell membrane. They allow large polar molecules to move in and out of the cell. The process is called passive diffusion or passive transport, because it does not need energy. Sometimes the protein changes shape to help the polar molecules move through the channel.