What happens during the Krebs cycle?

Sourav PanApril 18, 2025

Answered

During the Krebs cycle, acetyl-CoA combines with oxaloacetate to form citrate, which is progressively oxidized through a series of eight enzymatic reactions. This results in the release of two CO₂ molecules, and the reduction of three NAD⁺ to NADH and one FAD to FADH₂. A single GTP (or ATP) is formed through substrate-level phosphorylation. The cycle concludes with the regeneration of oxaloacetate, allowing continuous operation as long as substrates and cofactors are available.

Did this page help you?

Start Asking Questions Cancel reply

Quiz Leaderboard

1st

Meenakshi

Score: 100%

Questions: 20

2nd

Debabrata

Score: 100%

Questions: 20

3rd

BandzzzzTheONESIMELANE

Score: 95%

Questions: 20

4th

Sourav

Score: 90%

Questions: 20

5th

Nischal

Score: 90%

Questions: 10

6th

Priyanka

Score: 90%

Questions: 10

7th

OTLOTLENG

Score: 70%

Questions: 10

8th

Martin

Score: 65%

Questions: 20

9th

Meenakshi

Score: 60%

Questions: 50

10th

Meenakshi

Score: 55%

Questions: 20

Click "Create Mock Test" to start a quiz.
Select categories and the number of questions, then click "Submit" to begin.
After completing the quiz, enter your name and email, then click "Submit" to view your score.
Your score is shown as a percentage (e.g., 5 correct out of 10 is 50%).
The leaderboard displays your name, score percentage, and total questions answered.

Click here to Create Mock Test