21. The histone(s)pulls nucleosomes together into the 30-nm fiber. B) H3 D) H2B
ID: 255764 • Letter: 2
Question
21. The histone(s)pulls nucleosomes together into the 30-nm fiber. B) H3 D) H2B A) H1 C) H2A 22. In the stage 1 of photosynthesis, a proton gradient is generated and ATP is synthesized. Where do protons become concentrated in the chloroplast? A) thylakoid space B) stroma D) thylakoid membrane C) inner membrane 23. How many ATP are produced by chemiosmosis for one glucose oxidation? A) 30 B) 28 D) 25 C) 26 24. Which of the following statements about the chemiosmotic theory is correct? A) Electron transfer in mitochondria is accompanied by an asymmetric release of protons on a of the inner mitochondrial membrane. B) It predicts that oxidative phosphorylation can occur even in the absence of an intact inner mitochondrial membrance. C) The effect of uncoupling reagents is a consequence of their ability to carry electrons through membranes. D) The membrane ATP synthase has no significant role in the chemiosmotic theory 25. Which of the following does NOT participate in the electron-transport chain of mitochondria? A) cytochrome c C) rhodopsin B) ubiquinone D) copper ionExplanation / Answer
21) The histones H1 pulls nucleosomes together into the 30 nm fiber.
The correct answer is the option (A) H1
22) In the stage 1 of photosynthesis, a proton gradient is generated and ATP is synthesized. Where do protons become concentrate in the chloroplast?
The correct answer is the option (A) thylakoid space
23) How many ATP are produced by chemiosmosis for one glucose oxidation?
The correct answer is the option (A) 30
24) Which of the following statements about the chemiosmotic theory is correct?
The correct answer is the option (A) Electron transfer in mitochondria is accompanied by an asymmetric release of protons on one side of the inner mitochondrial membrane.
25) Which of the following does NOT participate in the electron-transport chain mitochondria?
The correct answer is the option (C) Rhodopsin
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