Important note: This diagram shows only one molecule of pyruvate and the reactions that result from that one molecule. In reality, two molecules pyruvate are generated from one molecule of glucose to go through the second stage of aerobic respiration

There are ______ carbon atoms (C) brought in by pyruvate at the start of step 1.

There are _______ carbon atoms (C) present in citrate

There is a total of _______ molecule(s) of ATP produced during the entire series of reactions (steps 1 and 2)


Which of the following molecules are regenerated at the end of the Krebs cycle in order for the Krebs cycle to start again? Check all that apply

Oxaloacetate
ATP
NADH
FADH2

At the beginning of the second stage of aerobic respiration, pyruvate brings in carbon atoms. By the end of the second stage of aerobic respiration where do those carbon atoms end up?

A Glucose
B Coenzyme A
C carbon dioxide