Multiple Choice
Which is the primary molecule broken down for energy in cells during cellular respiration?
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8. Respiration
Introduction to Cellular Respiration
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What role does NADH play in cellular respiration?
A
NADH is a primary substrate for glycolysis.
B
NADH directly produces ATP in the Krebs cycle.
C
NADH acts as a carrier of electrons to the electron transport chain.
D
NADH is used to synthesize glucose in photosynthesis.
Verified step by step guidance1
Understand the role of NADH in cellular respiration: NADH is a crucial electron carrier that plays a significant role in the process of cellular respiration.
Recognize the stages of cellular respiration: Cellular respiration consists of glycolysis, the Krebs cycle (also known as the citric acid cycle), and the electron transport chain.
Identify where NADH is produced: During glycolysis and the Krebs cycle, NADH is generated as a result of the oxidation of glucose and other intermediates.
Explain the function of NADH in the electron transport chain: NADH donates electrons to the electron transport chain, which is located in the inner mitochondrial membrane. This donation initiates a series of redox reactions.
Describe the outcome of electron transport: The electrons transferred by NADH help to create a proton gradient across the mitochondrial membrane, ultimately leading to the production of ATP through oxidative phosphorylation.
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