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

Which of the following happens to chromosomes during prophase?

The nuclear envelope re-forms around chromosomes.

Sister chromatids are pulled apart.

Chromosomes line up at the cell's equator.

Chromosomes condense and become visible.

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Verified step by step guidance

Understand the context of the cell cycle: Prophase is a stage of mitosis, which is the process of cell division that results in two daughter cells with identical genetic material.

Recognize the key events of prophase: During prophase, the chromatin fibers condense into discrete chromosomes that become visible under a microscope.

Identify the structural changes: Each chromosome consists of two sister chromatids joined at a region called the centromere.

Note the changes in the nuclear structure: The nuclear envelope begins to break down, allowing the spindle fibers to interact with the chromosomes.

Differentiate from other mitotic stages: Unlike metaphase where chromosomes line up at the equator, or anaphase where sister chromatids are pulled apart, prophase is characterized by the condensation of chromosomes.