LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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glycolysis and fermentation
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electron transport chain, then fermentation
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Krebs Cycle, then electron transport chain
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Krebs Cycle, then the Calvin cycle
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Detailed explanation-1: -In the presence of oxygen, the next stage after glycolysis is oxidative phosphorylation, which feeds pyruvate to the Krebs Cycle and feeds the hydrogen released from glycolysis to the electron transport chain to produce more ATP (up to 38 molecules of ATP are produced in this process).
Detailed explanation-2: -If oxygen is available, glycolysis is followed by two processes in the mitochondria–the Krebs cycle and oxidative phosphorylation, respectively–that further increase ATP yield.
Detailed explanation-3: -Thus the correct order of the stages in cellular respiration is: Glycolysis-Oxidative decarboxylation-Krebs cycle-Electron transport chain-Oxidative phosphorylation.
Detailed explanation-4: -Cellular respiration happens when oxygen is present and includes glycolysis, Krebs cycle, and Electron transport.
Detailed explanation-5: -NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.