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 would be found in the membrane of an animal cell?

Cholesterol

Chitin

Cellulose

Starch

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Verified step by step guidance

Understand the structure of an animal cell membrane: The cell membrane, also known as the plasma membrane, is primarily composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates.

Identify the role of cholesterol in the cell membrane: Cholesterol is a lipid molecule that is interspersed within the phospholipid bilayer of animal cell membranes. It helps to maintain fluidity and stability of the membrane.

Differentiate between the options provided: Chitin, cellulose, and starch are polysaccharides. Chitin is found in the exoskeletons of arthropods and cell walls of fungi, cellulose is a major component of plant cell walls, and starch is a storage form of glucose in plants.

Recognize that cholesterol is the only option that is a component of animal cell membranes. It is not found in plant cell membranes, which instead contain other sterols.

Conclude that cholesterol is the correct answer as it is the only molecule listed that is a structural component of animal cell membranes, contributing to their fluidity and integrity.