複選題
42. Which of the following gradient drives the ATP synthase for the production of ATP?
(A) hydrogen
(B) sodium
(C) potassium
(D) chloride
(E) None of the above

答案：登入後查看
統計： A(38), B(3), C(1), D(2), E(6) #3223060

詳解 (共 1 筆)

#6260249

中山醫疑義回覆:

<本题如考生所述答案確實不明 '氫離子（proton/hydrogen ion) I（A）或（E）均 的梯度驅動 ATP 合成確寶是較正確之答案。 给分>

ATP合成酶（ATP synthase）是由氫離子（質子）梯度hydrogen  gradient驅動的，這個梯度存在於細胞呼吸過程中的粒線體內膜，或光合作用中的類囊體膜。這個梯度是由電子傳遞鏈產生的，電子傳遞鏈將氫離子從基質pump入膜間隙，形成電化學梯度。

氫離子梯度為ATP合成酶催化ADP磷酸化生成ATP提供能量。

化學滲透（chemiosmosis）。

氫離子通過ATP合成酶回流，導致酶的機械旋轉，從而產生ATP。


674899d2cc45c.jpg

Which of the following does NOT match with its function?


(A) Chlorophyll a: Component of P700 reaction center


(B) ATP synthase: Chemiosmotic phosphorylation


(C) Cyclic electron transport: Electron flow from water to NADPH


(D) RuBP: Conjugates carbon dioxide


(E) Carotenoids: Absorption of excess light

答案C

34. When electrons flow along the electron transport chain of mitochondria, which of the following changes occurs?


(A) NAD+ is oxidized.


(B) The pH of the matrix is increased.


(C) ATP synthase pumps protons by active transport.


(D) The cytochrome c of the electron transport chain phosphorylates ADP to ATP.


(E) The electron donor of complex I in the chain is FADH2.


107年-107學士後西醫:普通生物及生化概論 #76177

答案B

ATP合成酶（ATP synthase）是由氫離子（質子）梯度hydrogen  gradient驅動的，這個梯度存在於細胞呼吸過程中的粒線體內膜，或光合作用中的類囊體膜。這個梯度是由電子傳遞鏈產生的，電子傳遞鏈將氫離子從基質pump入膜間隙，形成電化學梯度。


氫離子梯度為ATP合成酶催化ADP磷酸化生成ATP提供能量。


化學滲透（chemiosmosis）。


氫離子通過ATP合成酶回流，導致酶的機械旋轉，從而產生ATP。




Which of the following does NOT match with its function?




(A) Chlorophyll a: Component of P700 reaction center




(B) ATP synthase: Chemiosmotic phosphorylation




(C) Cyclic electron transport: Electron flow from water to NADPH




(D) RuBP: Conjugates carbon dioxide




(E) Carotenoids: Absorption of excess light


答案C


34. When electrons flow along the electron transport chain of mitochondria, which of the following changes occurs?




(A) NAD+ is oxidized.




(B) The pH of the matrix is increased.




(C) ATP synthase pumps protons by active transport.




(D) The cytochrome c of the electron transport chain phosphorylates ADP to ATP.




(E) The electron donor of complex I in the chain is FADH2.




107年-107學士後西醫:普通生物及生化概論 #76177


答案B




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