Table of contents

1. Introduction to Anatomy & Physiology5h 40m
2. Cell Chemistry & Cell Components12h 37m
3. Energy & Cell Processes10h 7m
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 Blood1h 22m
18. The Heart1h 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 Balance Coming soon
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity Coming soon

3. Energy & Cell Processes

Introduction to Metabolism

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Metabolism

Problem 3

Textbook Question

Which of the following metabolic processes can occur without a net influx of energy from some other process? a. ⓅADP+Ⓟi→ATP+H2O b. C6H12O6+6 O2→6 CO2+6 H2O c. 6 CO2+6 H2O→C6H12O6+6 O2 d. Amino acids → Protein

Verified step by step guidance

Identify the type of metabolic processes listed in the options: a) ATP synthesis, b) Cellular respiration, c) Photosynthesis, d) Protein synthesis.

Recall that processes that release energy are exergonic, while those that require energy input are endergonic.

Consider that cellular respiration (option b) is a catabolic process that breaks down glucose and releases energy, making it exergonic.

Recognize that ATP synthesis (option a), photosynthesis (option c), and protein synthesis (option d) are anabolic processes that require energy input, making them endergonic.

Conclude that the process which can occur without a net influx of energy from another process is the exergonic process, which is cellular respiration (option b).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Metabolic Processes

Metabolic processes refer to the biochemical reactions that occur within living organisms to maintain life. These processes can be categorized into catabolism, which breaks down molecules to release energy, and anabolism, which builds complex molecules from simpler ones. Understanding these processes is crucial for determining how energy is utilized or conserved in biological systems.

Energy Coupling

Energy coupling is the mechanism by which energy released from exergonic reactions (which release energy) is used to drive endergonic reactions (which require energy). This concept is essential for understanding how cells manage energy flow, allowing them to perform work without a net influx of energy from external sources. It highlights the interconnectedness of various metabolic pathways.

Glycolysis and Cellular Respiration

Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP in the process. Cellular respiration encompasses the complete oxidation of glucose to carbon dioxide and water, releasing energy. Recognizing these pathways helps in identifying which metabolic processes can occur spontaneously and which require energy input, thus answering the question effectively.