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

Replication of each chromosome and its centromere takes place during which phase of the cell cycle?

G2 phase

M phase

G1 phase

S phase

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Verified step by step guidance

Understand the cell cycle phases: The cell cycle consists of several phases, including G1, S, G2, and M phases. Each phase has specific functions related to cell growth and division.

Identify the function of the S phase: The S phase, or synthesis phase, is where DNA replication occurs. During this phase, each chromosome is duplicated, resulting in two sister chromatids connected by a centromere.

Differentiate between the phases: G1 phase is primarily for cell growth and preparation for DNA replication. G2 phase involves further growth and preparation for mitosis. M phase is where mitosis and cytokinesis occur, leading to cell division.

Recognize the importance of centromere replication: During the S phase, not only is the DNA replicated, but the centromere is also duplicated to ensure proper chromosome segregation during cell division.

Conclude the correct phase for replication: Based on the functions of each phase, the replication of chromosomes and their centromeres occurs during the S phase of the cell cycle.