Krebs cycle - non-synchronous

Question 1

What type of process is the Krebs cycle?

Answer 1

• Aerobic; requires energy

Question 2

How does the Krebs cycle release energy?

Answer 2

Oxidises acetyl-CoA which has been produced from carbohydrates, fats and proteins

Question 3

What is pyruvate converted into and how?

Answer 3

• Acetyl CoA
• A carboxylic acid is removed and co-enzyme A is added
• It then enters the Krebs cycle

Question 4

What does the kerb’s cycle deliver and what does this lead to?

Answer 4

Delivers the following:
- 3 NAD+
- 1 FAD
- 1 ATP
Which leads to a total of:
- 12 ATP molecules

Question 5

How does the Krebs cycle help to replenish the production of ATP?

Answer 5

• By providing NADH to the ETC