8 Questions
In one turn through the Krebs cycle, how many molecules of ATP are produced?
Two molecules of ATP
How many molecules of NADH are produced in one turn through the Krebs cycle?
Three molecules of NADH
What is the first product formed in the Krebs cycle?
Citric acid
What is the waste product released when the third carbon from pyruvate combines with oxygen?
Carbon dioxide
What is the main purpose of the Krebs cycle?
To transfer energy stored in pyruvate to NADH and FADH2
How many energy-carrier molecules are produced after two turns through the Krebs cycle?
16
Why is it necessary for the Krebs cycle to go through two turns?
Glycolysis produces two pyruvate molecules when it splits glucose
What happens to the original glucose molecule after the second turn through the Krebs cycle?
It has been broken down completely, and all six of its carbon atoms have combined with oxygen to form carbon dioxide
Test your knowledge of citric acid and its occurrence in various fruits with this quiz. Explore the link between citric acid and the Krebs cycle in cellular respiration.
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