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

Introduction to the Cell Cycle

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to the Cell Cycle

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Multiple Choice

What is the primary purpose of the G1 and G2 phases in the cell cycle?

To separate the sister chromatids into two new nuclei

To condense chromatin into visible chromosomes

To ensure the cell's DNA is accurately replicated and prepared for division

To synthesize RNA and proteins necessary for cell division

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Verified step by step guidance

Understand the cell cycle: The cell cycle consists of several phases, including interphase (G1, S, G2) and mitotic phase (M). Interphase is crucial for cell growth and preparation for division.

Focus on G1 phase: During the G1 phase, the cell grows and synthesizes RNA and proteins necessary for DNA replication. It ensures the cell is ready for the S phase, where DNA replication occurs.

Examine the G2 phase: After DNA replication in the S phase, the G2 phase involves further growth and preparation for mitosis. The cell checks for DNA damage and repairs it, ensuring accurate division.

Identify the primary purpose: The G1 and G2 phases are primarily about preparation and ensuring the cell's DNA is accurately replicated and ready for division. They are not directly involved in chromatid separation or chromatin condensation.

Clarify misconceptions: While chromatid separation and chromatin condensation are important, they occur during the mitotic phase, not during G1 and G2. The synthesis of RNA and proteins in G1 and G2 supports these later processes.