Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism

Pyruvate Oxidation

Biochemistry

Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism

Pyruvate Oxidation

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Multiple Choice

During the catabolism of glucose, which chemical compound enters the mitochondria to undergo pyruvate oxidation?

Lactate

Pyruvate

Glucose

Acetyl-CoA

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Verified step by step guidance

Understand the process of glucose catabolism: Glucose is broken down during glycolysis in the cytoplasm to produce two molecules of pyruvate, along with ATP and NADH.

Recognize the role of pyruvate: Pyruvate is the end product of glycolysis and serves as the key compound that enters the mitochondria for further processing.

Explain pyruvate oxidation: Once inside the mitochondria, pyruvate undergoes oxidative decarboxylation by the pyruvate dehydrogenase complex, producing acetyl-CoA, NADH, and CO2.

Clarify why lactate and glucose are not correct: Lactate is produced under anaerobic conditions and does not directly enter the mitochondria for pyruvate oxidation. Glucose is the starting molecule of glycolysis and does not directly participate in pyruvate oxidation.

Highlight the correct answer: Pyruvate is the chemical compound that enters the mitochondria to undergo pyruvate oxidation, leading to the production of acetyl-CoA for the citric acid cycle.