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Complete each statement about the permeable nature of the plasma membrane by selecting the appropriate term from each dropdown list.

1. The plasma membrane is [semipermeable], meaning that some molecules can cross through it while others cannot.
2. Some smaller, non-charged substances, such as carbon dioxide, are able to diffuse through the membrane without expending any energy.
3. This is called [passive transport] and can make use of [channel proteins] or carrier proteins.
4. Other larger, charged substances, such as macromolecules, aren't able to diffuse through the membrane without expending any energy.
5. This is called [active transport] and can make use of carrier proteins among others.

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Final answer:

The plasma membrane is semipermeable, allowing some molecules to pass through while others cannot. Passive transport relies on processes such as diffusion and the use of specific proteins for molecule movement.


Explanation:

Semipermeable means that some molecules can cross through it while others cannot. Some smaller, non-charged substances like carbon dioxide can diffuse through the membrane without expending energy. This is known as passive transport and can utilize channel proteins or carrier proteins. Larger, charged substances like macromolecules cannot diffuse through the membrane without expending energy.


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