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

Biological Membranes

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Biological Membranes

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Multiple Choice

Which of the following is not a characteristic of the plasma membrane?

It is selectively permeable.

It contains phospholipids and proteins.

It has a fluid mosaic structure.

It is rigid and inflexible.

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Verified step by step guidance

Understand the structure and function of the plasma membrane. The plasma membrane is a biological membrane that separates the interior of all cells from the outside environment.

Recognize that the plasma membrane is selectively permeable, meaning it allows certain substances to pass through while blocking others. This is a key characteristic that helps maintain homeostasis within the cell.

Identify the components of the plasma membrane. It is primarily composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates, which contribute to its fluidity and functionality.

Learn about the fluid mosaic model, which describes the plasma membrane as a dynamic and flexible structure where lipids and proteins can move laterally within the layer, contributing to its fluid nature.

Evaluate the statement 'It is rigid and inflexible.' This contradicts the fluid mosaic model, as the plasma membrane is not rigid but rather flexible and dynamic, allowing for movement and adaptation.