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OlgaM077 [116]
3 years ago
14

what cellular mechanisms allow human body cells to maintain these concentrations ?

Biology
1 answer:
sweet [91]3 years ago
4 0
Answer:


Active transport: movement against a gradient To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the proper concentrations of ions and molecules in living cells.
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Answer:

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Therefore, as all of these arthropods were present in the Devonian period, the correct answer is <u>d) None of the above</u>.

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<h2>Answer:</h2>

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