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 Cell Division

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Cell Division

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Multiple Choice

What does the G2 checkpoint in the cell cycle primarily check for?

Proper alignment of chromosomes during metaphase

Sufficient cell size and nutrient availability

Attachment of spindle fibers to kinetochores

Completion of DNA replication and DNA damage repair

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Verified step by step guidance

Understand the context of the G2 checkpoint: The G2 checkpoint is a critical control mechanism in the cell cycle that ensures cells do not initiate mitosis before they are ready.

Identify the primary function of the G2 checkpoint: The G2 checkpoint primarily checks for the completion of DNA replication and the repair of any DNA damage that may have occurred during the S phase.

Differentiate between the functions of various checkpoints: The G1 checkpoint checks for cell size, nutrients, and DNA damage before DNA replication. The metaphase checkpoint (also known as the spindle checkpoint) ensures proper alignment of chromosomes and attachment of spindle fibers to kinetochores.

Relate the G2 checkpoint to the overall cell cycle: The G2 checkpoint occurs after the S phase and before the M phase (mitosis), ensuring that the cell is fully prepared to enter mitosis with intact and accurately replicated DNA.

Summarize the importance of the G2 checkpoint: By ensuring DNA replication is complete and any damage is repaired, the G2 checkpoint helps maintain genomic stability and prevents the propagation of errors to daughter cells.