本题目来源于试卷: Interaction & Interdependence C.2 Cell Respiration，类别为 IB生物学
[单选题]
The Krebs cycle is one of the stages in a42pr,uxc m1d b ma0 fq9d(k;roi2aq9nerobd:v2 wcn yx4*fhmf-4c gc*nu+ic cellular respiration. Which of the following correcwf4 +h* cy4-v cf*g:n2cdx muntly describes the electron carriers?
A. Electron carriers is NAD +, Oxidation or Reduction is Reduced to NADH,Number of times produced in one cycle is 1
B. Electron carriers is FAD +, Oxidation or Reduction is Oxidized to FADH 2,Number of times produced in one cycle is 3
C. Electron carriers is NAD +, Oxidation or Reduction is Oxidized to NADH,Number of times produced in one cycle is 3
D. Electron carriers is FAD +, Oxidation or Reduction is Reduced to FADH 2,Number of times produced in one cycle is 1
参考答案: D
本题详细解析:
In one turn of the Krebs cycle, the production of NADH occurs three t)a6dfp6 w4zdql1efd lia95x , imes and the production of FADH
2
happens once. Both NAD
+
and FAD
+
have to undergo reduction where they gain electrons and hydrogen ions to form NADH and FADH
2
. Oxidation is the process where a substance loses electrons and hydrogen. NAD
+
and FAD
+
are the oxididz pwfaf ,4d lx5a)qle6 916idsed forms whereas NADH and FADH
2
are the reduced forms.
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