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 is a source of electrons donated to the electron transport chain in cellular respiration?

NADH

Carbon dioxide

ATP

Oxygen

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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 the electron transport chain: The main electron donors are NADH and FADH2, which are generated during earlier stages of cellular respiration such as glycolysis and the citric acid cycle.

Recognize the function of NADH: NADH is a key electron carrier that donates electrons to the electron transport chain, specifically to Complex I, initiating the process of electron transfer.

Differentiate between the given options: Carbon dioxide is a waste product of cellular respiration, ATP is the energy currency produced, and oxygen is the final electron acceptor in the chain, not a donor.

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