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

Cells A and B are the same size, shape, and temperature, but cell A is metabolically less active than cell B, and cell B is actively converting oxygen to water in cellular respiration. Oxygen will diffuse more rapidly into cell because .

A; the concentration gradient there is shallower

A; its membrane transport proteins will not be saturated

B; the oxygen molecules inside cell B have a higher kinetic energy

B; the gradient of oxygen is oriented in the opposite direction compared to cell A

B; the diffusion gradient in cell B is steeper

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Verified step by step guidance

Understand the concept of diffusion: Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. The rate of diffusion is influenced by the concentration gradient, which is the difference in concentration between two areas.

Identify the metabolic activity: Cell B is more metabolically active than cell A, meaning it is using more oxygen for cellular respiration. This results in a lower concentration of oxygen inside cell B compared to cell A.

Analyze the concentration gradient: Since cell B is actively converting oxygen to water, the concentration of oxygen inside cell B is lower than outside, creating a steeper concentration gradient compared to cell A.

Relate the concentration gradient to diffusion rate: A steeper concentration gradient results in a faster rate of diffusion. Therefore, oxygen will diffuse more rapidly into cell B because the concentration gradient is steeper.

Conclude with the correct choice: Based on the analysis, the correct answer is that oxygen will diffuse more rapidly into cell B because the diffusion gradient in cell B is steeper.