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

ATP

Anatomy & Physiology

3. Energy & Cell Processes

ATP

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Problem 20

Textbook Question

Which of the following statements is/are true regarding ATP?
a. It is the body's primary source of chemical energy.
b. Its production is the main reason humans breathe oxygen.
c. It is produced using the energy from the oxidation of molecular fuels like glucose.
d. All of the above statements are true.

Verified step by step guidance

Step 1: Understand the role of ATP (adenosine triphosphate) in the body. ATP is the primary molecule used by cells to store and transfer energy for various biological processes, making it the body's primary source of chemical energy.

Step 2: Recognize the connection between ATP production and oxygen. Humans breathe oxygen because it is essential for cellular respiration, specifically in the electron transport chain, where oxygen acts as the final electron acceptor to produce ATP efficiently.

Step 3: Analyze how ATP is produced. ATP is synthesized during cellular respiration, which involves the oxidation of molecular fuels like glucose. This process includes glycolysis, the citric acid cycle, and oxidative phosphorylation.

Step 4: Evaluate the statements provided in the question. Each statement should be assessed based on the information above to determine its accuracy.

Step 5: Conclude that if all the individual statements (a, b, and c) are true, then the final option (d) stating 'All of the above statements are true' would also be correct.

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Key Concepts

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

ATP as Energy Currency

Adenosine triphosphate (ATP) is often referred to as the energy currency of the cell. It stores and transports chemical energy within cells, enabling various biological processes. When ATP is hydrolyzed, it releases energy that can be used for cellular activities, making it essential for metabolism and muscle contraction.

Role of Oxygen in ATP Production

Oxygen plays a critical role in cellular respiration, particularly in aerobic organisms. It acts as the final electron acceptor in the electron transport chain, allowing for the efficient production of ATP from glucose and other substrates. This process is vital for generating the energy required for sustaining life.

Oxidation of Molecular Fuels

The oxidation of molecular fuels, such as glucose, involves the breakdown of these compounds to release energy. This energy is harnessed during cellular respiration to synthesize ATP. The process includes glycolysis, the Krebs cycle, and oxidative phosphorylation, highlighting the interconnectedness of metabolic pathways in energy production.