i think the correct answer is B considering that the channels are not always open for the protons to freely diffuse through the inner membrane.
I’m not sure I think it’s D.) Hope I could help :)))
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The answer is D I’m pretty sure
Answer:
The Y chromosome is an accurate indicator of a person's external sex organs.
Explanation:
Since females have two X chromosomes while males have one X and one Y chromosome, if you are aware of the presence of a Y chromosome you can safely assume that a person is a male. Therefore, you can assume what external sex organs a male has.
The answer is c. last time i had that and my teacher said it was c
