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

3. Energy & Cell Processes

Phases of Mitosis

Anatomy & Physiology

3. Energy & Cell Processes

Phases of Mitosis

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Multiple Choice

During which phase of mitosis do spindle fibers first become visible?

Metaphase

Prophase

Telophase

Anaphase

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Verified step by step guidance

Understand the process of mitosis, which is the division of a single cell into two identical daughter cells. Mitosis consists of several phases: prophase, metaphase, anaphase, and telophase.

Recognize that prophase is the first stage of mitosis. During prophase, several key events occur: the chromatin condenses into visible chromosomes, the nuclear envelope begins to disintegrate, and the mitotic spindle starts to form.

Identify the role of spindle fibers in mitosis. Spindle fibers are structures that help separate the chromosomes during cell division. They are composed of microtubules and are crucial for the movement of chromosomes.

Note that during prophase, the spindle fibers first become visible as they start to form from the centrosomes, which move to opposite poles of the cell.

Conclude that the correct phase during which spindle fibers first become visible is prophase, as this is when the mitotic spindle begins to assemble and become apparent.