Cellular respiration occurs in three distinct,yet interconnected series of reactions.Which of the following gives the correct order of these reactions?
A) electron transport chain,glycolysis and citric acid cycle
B) glycolysis,electron transport chain and citric acid cycle
C) citric acid cycle,glycolysis and electron transport chain
D) glycolysis,citric acid cycle and electron transport chain
E) electron transport chain,citric acid cycle,glycolysis

Question

Quizplus · Accepted Answer

The correct order of the three series of reactions in cellular respiration is glycolysis, citric acid cycle, and electron transport chain. This is because glycolysis occurs in the cytoplasm of the cell, while the citric acid cycle and electron transport chain occur in the mitochondria. The products of glycolysis, pyruvate molecules, are transported to the mitochondria where they enter the citric acid cycle. The citric acid cycle produces energy in the form of ATP and electron carriers, which are then used in the electron transport chain to produce even more ATP. Therefore, the correct order is glycolysis, citric acid cycle, and electron transport chain, which is represented by choice D.

Cellular Respiration Occurs in Three Distinct,yet Interconnected Series of Reactions