TCA Cycle Quiz

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What is the main product formed in the first reaction of the TCA cycle?

Citrate (correct)

Isocitrate

Oxaloacetate

Acetyl CoA

Which enzyme is responsible for the isomerization of citrate to isocitrate?

Aconitase (correct)

Isocitrate dehydrogenase

Pyruvate dehydrogenase

Citrate synthase

During which reaction is the first NADH molecule produced in the TCA cycle?

Oxidative decarboxylation of isocitrate (correct)

Isomerization of citrate

Formation of alpha-ketoglutarate

Condensation of acetyl CoA

What is released during the oxidative decarboxylation of isocitrate in the TCA cycle?

$CO_2$ Signup and view all the answers

What substrate is required for the synthesis of citrate in the TCA cycle?

Oxaloacetate Signup and view all the answers

What is the net result regarding oxaloacetate during one turn of the TCA cycle?

There is no net consumption or production of oxaloacetate Signup and view all the answers

How many ATP molecules can be generated from the oxidation of one acetyl-CoA in the TCA cycle?

12 ATP Signup and view all the answers

Which of the following is NOT an inhibitor of the TCA cycle?

FADH2 Signup and view all the answers

What is the approximate ATP yield from the oxidation of one NADH during the TCA cycle?

3 ATP Signup and view all the answers

Which compounds act as activators in the regulation of the TCA cycle?

ADP and Oxaloacetate Signup and view all the answers

TCA Cycle Quiz

Podcast

Questions and Answers

What is the main product formed in the first reaction of the TCA cycle?

Which enzyme is responsible for the isomerization of citrate to isocitrate?

During which reaction is the first NADH molecule produced in the TCA cycle?

What is released during the oxidative decarboxylation of isocitrate in the TCA cycle?

What substrate is required for the synthesis of citrate in the TCA cycle?

What is the net result regarding oxaloacetate during one turn of the TCA cycle?

How many ATP molecules can be generated from the oxidation of one acetyl-CoA in the TCA cycle?

Which of the following is NOT an inhibitor of the TCA cycle?

What is the approximate ATP yield from the oxidation of one NADH during the TCA cycle?

Which compounds act as activators in the regulation of the TCA cycle?

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