Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

21. The Generation of Biochemical Energy

Aerobic Respiration Summary

GOB Chemistry

21. The Generation of Biochemical Energy

Aerobic Respiration Summary

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2:37 minutes

Problem 53

Textbook Question

How are glycolysis and the citric acid cycle linked to the production of ATP by electron transport?

Verified step by step guidance

Understand that glycolysis and the citric acid cycle are metabolic pathways that break down glucose and other molecules to produce energy intermediates. Glycolysis occurs in the cytoplasm, while the citric acid cycle occurs in the mitochondria.

Recognize that during glycolysis, glucose is converted into pyruvate, producing ATP and NADH. NADH is an electron carrier that plays a crucial role in the electron transport chain.

Learn that in the citric acid cycle, pyruvate is further oxidized to produce carbon dioxide, ATP (or GTP), NADH, and FADH₂. Both NADH and FADH₂ are electron carriers that store high-energy electrons.

Understand that NADH and FADH₂ donate their high-energy electrons to the electron transport chain located in the inner mitochondrial membrane. This chain consists of a series of protein complexes that transfer electrons and pump protons across the membrane.

Recognize that the proton gradient created by the electron transport chain drives ATP synthesis through a process called oxidative phosphorylation. ATP synthase uses the energy from the flow of protons back into the mitochondrial matrix to convert ADP and inorganic phosphate (Pi) into ATP.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Glycolysis

Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP and NADH in the process. This occurs in the cytoplasm and is the first step in cellular respiration, providing the necessary substrates for the citric acid cycle. The ATP generated here is crucial for cellular energy, while NADH serves as an electron carrier for subsequent processes.

Citric Acid Cycle

The citric acid cycle, also known as the Krebs cycle, takes place in the mitochondria and processes acetyl-CoA derived from pyruvate. It generates additional NADH and FADH2, which are vital for the electron transport chain. This cycle not only contributes to ATP production but also plays a key role in the metabolism of carbohydrates, fats, and proteins.

Electron Transport Chain

The electron transport chain (ETC) is a series of protein complexes located in the inner mitochondrial membrane that transfer electrons from NADH and FADH2 to oxygen, the final electron acceptor. This process creates a proton gradient that drives ATP synthesis through oxidative phosphorylation. The ETC is essential for maximizing ATP yield from the substrates generated in glycolysis and the citric acid cycle.

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