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What kinds of materials may be prevented from passing through a cell membrane?

Answer 1

Jeremiah Allen

Ions, large molecules

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Answer 2

Clara Atchley

Materials that may be prevented from passing through a cell membrane include large molecules such as proteins and nucleic acids, charged ions, and hydrophilic substances.

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Answer 3

Nicholas Ahn

Materials that may be prevented from passing through a cell membrane include large molecules such as proteins and polysaccharides, charged ions, and hydrophilic molecules. Additionally, molecules that are not lipid-soluble or do not have specific transport proteins to facilitate their passage may also be restricted from crossing the cell membrane.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.