Which of the following events takes place in the electron transport chain? Select one: a. energy is stored in the form of NADH b. the harnessing of energy from high-energy electrons derived from glycolysis and the citric acid cycle c. the breakdown of an acetyl group to carbon dioxide d. the breakdown of glucose into six carbon dioxide molecules e. substrate-level phosphorylation
Which of the following events takes place in the electron transport chain? Select one:
a. energy is stored in the form of NADH
b. the harnessing of energy from high-energy electrons derived from glycolysis and the citric acid cycle
c. the breakdown of an acetyl group to carbon dioxide
d. the breakdown of glucose into six carbon dioxide molecules
e. substrate-level phosphorylation
Answered
The correct answer is:
b. the harnessing of energy from high-energy electrons derived from glycolysis and the citric acid cycle
Explanation:
The electron transport chain (ETC) involves the transfer of high-energy electrons from NADH and FADH2_2 (produced during glycolysis and the citric acid cycle) through a series of protein complexes in the inner mitochondrial membrane. This process generates a proton gradient across the membrane, which is used to produce ATP via oxidative phosphorylation. Other listed options describe events that occur in different stages of cellular respiration but not in the ETC.
BNO Team
