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Pyruvate Dehydrogenase & Citric Acid Cycle Quiz

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Pyruvate Dehydrogenase & Citric Acid Cycle Quiz

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Questions and Answers

What is the final product of the citric acid cycle?

Pyruvate

Two molecules of CO2 (correct)

Acetyl CoA

One molecule of ATP

What is the alternative name for the citric acid cycle?

Tricarboxylic acid cycle (correct)

Electron transport chain cycle

Pentose phosphate pathway

Glycolysis cycle

What is the primary function of the citric acid cycle?

Generate high-energy electrons for ATP synthesis (correct)

Produce NADH and FADH2

Convert ADP to ATP

Convert glucose to pyruvate

What is the role of the pyruvate dehydrogenase complex?

<p>Oxidatively decarboxylates pyruvate to acetyl CoA</p> Signup and view all the answers

What is the main entry point for fuel molecules into the citric acid cycle?

<p>Acetyl CoA</p> Signup and view all the answers

Study Notes

Citric Acid Cycle Products

The final product of the citric acid cycle is oxaloacetate, which is regenerated to start the cycle again.
Four molecules of reduced electron carriers are produced: 3 NADH and 1 FADH₂.
The citric acid cycle also generates two molecules of carbon dioxide as a byproduct.

Alternative Name

The citric acid cycle is also known as the Krebs cycle or the tricarboxylic acid (TCA) cycle.

Citric Acid Cycle Function

The main function of the citric acid cycle is to oxidize acetyl-CoA, derived from carbohydrates, fats, and proteins, to produce ATP, reduced electron carriers (NADH and FADH₂), and carbon dioxide.

Pyruvate Dehydrogenase Complex

The pyruvate dehydrogenase complex plays a crucial role in converting pyruvate, a product of glycolysis, into acetyl-CoA.

Entry Point

Acetyl-CoA serves as the main entry point for fuel molecules into the citric acid cycle.

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Description

Test your knowledge of Pyruvate Dehydrogenase and the Citric Acid Cycle with this quiz. Assess your understanding of the crucial metabolic reaction catalyzed by the pyruvate dehydrogenase complex and the means by which it regulates cellular respiration. Master the key concepts of Chapter 17 with this insightful quiz.