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

In the context of redox reactions, what species accepts electrons in the final step of the electron transport chain?

Water

Oxygen

NAD+

FAD

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Verified step by step guidance

Understand the context of the problem: The electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.

Identify the role of each species mentioned: Oxygen, NAD+, and FAD are all involved in redox reactions, but they play different roles. NAD+ and FAD are electron carriers that become reduced to NADH and FADH2, respectively, during earlier stages of cellular respiration.

Recognize the final electron acceptor: In the electron transport chain, electrons are passed through a series of complexes and ultimately transferred to a final electron acceptor. This is a critical step for the production of water and the generation of ATP.

Determine the final electron acceptor: Oxygen is the final electron acceptor in the electron transport chain. It accepts electrons and combines with protons to form water (H2O). This step is essential for maintaining the flow of electrons through the chain.

Conclude the explanation: The role of oxygen as the final electron acceptor is crucial because it allows for the continuation of the electron transport chain, enabling the production of ATP through oxidative phosphorylation.