Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Redox Reactions

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Redox Reactions

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Multiple Choice

Which of the following molecules provides electrons to the electron transport chain in cellular respiration?

Oxygen

ATP

Carbon dioxide

NADH

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Verified step by step guidance

Understand the role of the electron transport chain in cellular respiration: It is a series of protein complexes located in the inner mitochondrial membrane that transfers electrons from electron donors to electron acceptors via redox reactions.

Identify the molecules involved in donating electrons to the electron transport chain: The primary electron donors are NADH and FADH2, which are generated during earlier stages of cellular respiration such as glycolysis, the citric acid cycle, and the oxidation of fatty acids.

Recognize the function of NADH: NADH is a coenzyme that carries electrons from metabolic reactions to the electron transport chain. It is oxidized to NAD+ while transferring electrons to Complex I of the chain.

Differentiate between the roles of the given molecules: Oxygen acts as the final electron acceptor in the electron transport chain, forming water. ATP is the energy currency of the cell, produced as a result of the electron transport chain, not a donor. Carbon dioxide is a byproduct of the citric acid cycle, not involved in electron donation.

Conclude that NADH is the correct molecule that donates electrons to the electron transport chain, facilitating the production of ATP through oxidative phosphorylation.