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

2. Cell Chemistry & Cell Components

Simple and Facilitated Diffusion

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Simple and Facilitated Diffusion

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Multiple Choice

Which of the following is false in regard to facilitated diffusion?

Facilitated diffusion requires a concentration gradient.

Facilitated diffusion can occur through protein channels.

Facilitated diffusion can occur by means of transport proteins.

Facilitated diffusion can move ions across membranes.

Facilitated diffusion requires the hydrolysis of ATP.

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Verified step by step guidance

Understand the concept of facilitated diffusion: Facilitated diffusion is a passive transport mechanism where molecules move across cell membranes through protein channels or transport proteins without the need for energy input.

Recognize the role of concentration gradient: Facilitated diffusion relies on a concentration gradient, meaning molecules move from an area of higher concentration to an area of lower concentration.

Identify the involvement of protein channels and transport proteins: Facilitated diffusion can occur through protein channels or transport proteins, which help specific molecules or ions pass through the membrane.

Clarify the movement of ions: Facilitated diffusion can indeed move ions across membranes, as ions often require specific channels or carriers to traverse the lipid bilayer.

Evaluate the statement about ATP hydrolysis: Facilitated diffusion does not require the hydrolysis of ATP, as it is a passive process. ATP hydrolysis is associated with active transport, where energy is needed to move substances against their concentration gradient.