Multiple Choice
Most of the CO\(_2\) produced during the catabolism of glucose is released during which stage of cellular respiration?
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8. Respiration
Introduction to Cellular Respiration
Multiple Choice
During aerobic respiration, electrons travel downhill in which sequence?
A
glucose → NADH → electron transport chain → O\(_2\)
B
O\(_2\) → NADH → glucose → electron transport chain
C
glucose → electron transport chain → NADH → O\(_2\)
D
NADH → glucose → electron transport chain → O\(_2\)
Verified step by step guidance1
Understand the process of aerobic respiration: Aerobic respiration is a metabolic pathway where glucose is broken down to produce ATP, and electrons are transferred through a series of molecules to ultimately reduce oxygen (O\(_2\)).
Identify the starting point: Glucose is the initial molecule that undergoes oxidation during glycolysis, releasing electrons that are captured by NAD\(^+\) to form NADH.
Trace the electron flow: Electrons from NADH are transferred to the electron transport chain, a series of protein complexes embedded in the mitochondrial membrane.
Recognize the final electron acceptor: At the end of the electron transport chain, electrons are transferred to oxygen (O\(_2\)), which combines with protons to form water (H\(_2\)O).
Sequence the electron flow: The correct downhill sequence of electron travel during aerobic respiration is glucose → NADH → electron transport chain → O\(_2\).
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