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

Osmosis

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Osmosis

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Multiple Choice

Which of the following best describes tonicity in the context of osmosis?

The ability of a solution to cause a cell to gain or lose water due to differences in solute concentration.

The pressure required to prevent water from moving across a semipermeable membrane.

The movement of water across a semipermeable membrane from a region of low solute concentration to high solute concentration.

The total amount of solute dissolved in a solution.

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Verified step by step guidance

Step 1: Begin by understanding the concept of tonicity in the context of osmosis. Tonicity refers to the effect of a solution's solute concentration on the movement of water across a semipermeable membrane.

Step 2: Recall that osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a semipermeable membrane. This movement is driven by differences in solute concentration.

Step 3: Analyze the options provided. The correct description of tonicity should focus on how a solution influences the movement of water into or out of a cell, based on solute concentration differences.

Step 4: Eliminate incorrect options. For example, 'The total amount of solute dissolved in a solution' describes osmolarity, not tonicity. Similarly, 'The pressure required to prevent water from moving across a semipermeable membrane' refers to osmotic pressure, not tonicity.

Step 5: Identify the correct option: 'The ability of a solution to cause a cell to gain or lose water due to differences in solute concentration.' This accurately describes tonicity in the context of osmosis.