Question

In: Biology

Which CAC enzyme activity is also part of electron transport? Where is the citric acid cycle...

Which CAC enzyme activity is also part of electron transport?

Where is the citric acid cycle specifically located in eukaryotic cells?

Solutions

Expert Solution

Citric acid cycle and electron transport chain :-
• These are steps in cellular respiration process.
• Citric acid cycle (CAC) or krebs cycle occurs at mitochondrial matrix of eukaryotic cells.
• In this process, NADH and FADH2 are produced.
• These NADH and FADH2 provide electrons to electron transport chain and help in formation of ATP.
• Electron transport chain is situated at inner mitochondrial membrane. This is formed by various electron carrier complexes.

Succinate dehydrogenase :-
• This enzyme is situated at inner mitochondrial membrane.
• This is the enzyme which is part of both citric acid cycle and electron transport chain.
• In citric acid cycle, this enzyme converts succinate to fumarate and forms FADH2 .
• In electron transport chain, this enzyme acts as compelx 2nd and accepts electrons from FADH2 and transfer them to coenzyme Q.

Answers for question -
Part 1. - Enzyme succinate dehydrogenase.
Part 2. - Mitochondrial matrix.


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