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

Chemiosmosis

Anatomy & Physiology

3. Energy & Cell Processes

Chemiosmosis

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1:18 minutes

Problem 9

Textbook Question

MAKE CONNECTIONS The proton pump shown in Figures 7.17 and 7.18 is a type of ATP synthase (see Figure 9.14). Compare the processes shown in the two figures, and say whether they are involved in active or passive transport (see Concepts 7.3 and 7.4).

Verified step by step guidance

Review Figures 7.17 and 7.18 to understand the structure and function of the proton pump depicted.

Examine Figure 9.14 to identify the ATP synthase and its role in cellular processes.

Compare the mechanisms of the proton pump and ATP synthase, focusing on how they move protons across membranes.

Determine whether the proton pump and ATP synthase are examples of active or passive transport by considering if they require energy input (ATP) or utilize a concentration gradient.

Refer to Concepts 7.3 and 7.4 to clarify the definitions and examples of active and passive transport, and apply these definitions to the processes in the figures.

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Key Concepts

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

ATP Synthase

ATP synthase is an enzyme that catalyzes the formation of adenosine triphosphate (ATP) from adenosine diphosphate (ADP) and inorganic phosphate. It plays a crucial role in cellular respiration and photosynthesis, utilizing a proton gradient to drive the synthesis of ATP. This process is essential for energy transfer within cells.

Active Transport

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, against the concentration gradient. This process requires energy, typically in the form of ATP, to function. It is vital for maintaining cellular homeostasis and nutrient uptake.

Passive Transport

Passive transport refers to the movement of molecules across a cell membrane without the use of energy, occurring along the concentration gradient. This includes processes such as diffusion and osmosis, where substances move from areas of higher concentration to lower concentration. It is essential for the regulation of substances within cells.