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

15. Chemical Kinetics

Catalyst

General Chemistry

15. Chemical Kinetics

Catalyst

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Multiple Choice

Which of the following substances act as catalysts in the body?

Hormones

Vitamins

Minerals

Enzymes

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Verified step by step guidance

Understand the role of catalysts: Catalysts are substances that increase the rate of a chemical reaction without being consumed in the process. In the body, catalysts are crucial for facilitating biochemical reactions efficiently.

Identify the function of enzymes: Enzymes are biological catalysts that speed up reactions in the body. They are proteins that bind to substrates and lower the activation energy required for reactions, making them proceed faster.

Differentiate between enzymes and other substances: Hormones, vitamins, and minerals have distinct roles in the body. Hormones are signaling molecules, vitamins are organic compounds necessary for various functions, and minerals are inorganic elements that support bodily processes. None of these act as catalysts.

Recognize the specificity of enzymes: Enzymes are highly specific to the reactions they catalyze, often working on particular substrates to produce specific products. This specificity is due to their unique active sites.

Conclude that enzymes are the body's catalysts: Based on their ability to accelerate reactions without being consumed, enzymes are the substances that act as catalysts in the body, unlike hormones, vitamins, or minerals.