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Energy and Equilibrium
Quick questions on The Krebs cycle and oxidative phosphorylation: H2 Biology Energy and Equilibrium
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the Krebs cycle?Show answer
The Krebs cycle occurs in the mitochondrial matrix. Each acetyl coenzyme A delivers its two-carbon acetyl group, which combines with a four-carbon molecule to form a six-carbon molecule (citrate); coenzyme A is released to be reused.
What is overall yield?Show answer
In total, the complete aerobic oxidation of one glucose yields about 30 to 32 ATP, the great majority from oxidative phosphorylation.
What is q1?Show answer
State the role of oxygen in oxidative phosphorylation. [1 mark]
What is q2?Show answer
Explain how a proton gradient is used to make ATP. [2 marks]
What is q3?Show answer
State where in the mitochondrion the Krebs cycle and the electron transport chain are located. [2 marks]
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