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

Introduction to Metabolism

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Metabolism

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

Which of the following best describes the main differences between catabolic and anabolic reactions?

Catabolic reactions only occur in plants, while anabolic reactions only occur in animals.

Catabolic reactions break down molecules and release energy, while anabolic reactions build molecules and require energy.

Catabolic reactions require energy input, while anabolic reactions release energy.

Catabolic reactions build complex molecules from simpler ones, while anabolic reactions break down complex molecules.

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the definitions of catabolic and anabolic reactions. Catabolic reactions involve the breakdown of larger molecules into smaller ones, releasing energy in the process. Anabolic reactions, on the other hand, involve the synthesis of larger molecules from smaller ones, requiring energy input.

Step 2: Analyze the options provided in the problem. Compare each statement to the definitions of catabolic and anabolic reactions to determine which aligns with the correct description.

Step 3: Eliminate incorrect options systematically. For example, the statement 'Catabolic reactions only occur in plants, while anabolic reactions only occur in animals' is incorrect because both types of reactions occur in all living organisms.

Step 4: Evaluate the remaining options. The correct answer should accurately describe the energy dynamics and molecular processes involved in catabolic and anabolic reactions.

Step 5: Confirm the correct answer: 'Catabolic reactions break down molecules and release energy, while anabolic reactions build molecules and require energy.' This aligns with the definitions and processes of these reactions in Anatomy & Physiology.