Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Chemical Reactions

Anatomy & Physiology

3. Energy & Cell Processes

Chemical Reactions

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

When one molecule is broken down into six component molecules, which of the following will always be true?

An input of free energy is needed.

ΔG is positive.

ΔH is negative.

ΔS is negative.

ΔS is positive.

Previous problemNext problem

Verified step by step guidance

Understand the concept of entropy (ΔS), which is a measure of disorder or randomness in a system. When a molecule is broken down into multiple smaller molecules, the disorder typically increases.

Recognize that an increase in the number of molecules generally leads to an increase in entropy. This is because there are more possible ways to arrange the smaller molecules compared to the single larger molecule.

Recall that a positive change in entropy (ΔS) indicates an increase in disorder. In this scenario, breaking down one molecule into six component molecules increases the disorder of the system.

Consider the other options: A positive ΔG indicates a non-spontaneous reaction requiring energy input, and a negative ΔH suggests an exothermic reaction. These are not necessarily true for the breakdown of a molecule into smaller parts.

Conclude that the correct statement is ΔS is positive, as the breakdown of a molecule into smaller components increases the system's entropy.