Small, charged molecules can cross the cell membrane through protein channels.
What are protein channels?
The protein channel can be referred to as the protein that allows for the transportation of specific substances across the cell membrane of a human being. The protein is known to be made up of different amino acids and that is what is used to determine the function of that particular protein.
Hence we can say that Small, charged molecules can cross the cell membrane through protein channels.
Read more on protein channels here: https://brainly.com/question/731879
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