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allochka39001 [22]
3 years ago
14

What do cells require in order for diffusion to occur across the cell membrane?

Biology
1 answer:
Serga [27]3 years ago
5 0
A the concentration gradient!
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Explanation:

Part A

 In the bright daylight, the Calvin cycle happens indoors in the stroma. throughout the Calvin cycle, the results  ATP and NADPH are conventional convert molecules of carbonic acid gas into high-energy sugars.

Part B

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Part C

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When an atom outright loses or gains an electron, the atom becomes charges positively or
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Explanation:

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