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

Introduction to Eukaryotic Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

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Multiple Choice

Which of the following molecules is required by cells to assemble cilia or flagella?

Keratin

Tubulin

Actin

Collagen

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Verified step by step guidance

Understand the structure and function of cilia and flagella: Cilia and flagella are hair-like structures that extend from the surface of many eukaryotic cells. They are involved in movement and sensory functions.

Identify the main structural component of cilia and flagella: Both cilia and flagella are primarily composed of microtubules, which are cylindrical structures made of protein subunits.

Recognize the protein subunit that forms microtubules: Microtubules are made up of tubulin proteins. Tubulin is a globular protein that polymerizes to form the hollow tubes of microtubules.

Differentiate between the given options: Keratin, actin, and collagen are proteins with different functions. Keratin is a structural protein in hair and nails, actin is involved in muscle contraction and cell movement, and collagen provides structural support in connective tissues.

Conclude that tubulin is the molecule required for the assembly of cilia and flagella, as it is the building block of microtubules, which are essential for their structure and function.