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

Cell Cycle Regulation

Anatomy & Physiology

3. Energy & Cell Processes

Cell Cycle Regulation

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

What is the primary function of the G2 checkpoint in the cell cycle?

To confirm that the cell has reached an adequate size before DNA replication.

To verify that the cell has sufficient energy reserves to enter the S phase.

To ensure that DNA has been accurately replicated and is undamaged before mitosis.

To check that all chromosomes are properly attached to the spindle apparatus.

Previous problemNext problem

Verified step by step guidance

Understand the cell cycle phases: The cell cycle consists of interphase (G1, S, G2) and mitotic phase (M). The G2 phase follows DNA replication in the S phase and precedes mitosis.

Identify the role of checkpoints: Checkpoints are control mechanisms that ensure the fidelity of cell division. They prevent the progression of the cell cycle if certain conditions are not met.

Focus on the G2 checkpoint: The G2 checkpoint is crucial for verifying the integrity of the DNA before the cell enters mitosis. It checks for DNA damage and ensures that replication is complete.

Consider the options provided: Evaluate each option based on the function of the G2 checkpoint. The correct function is to ensure DNA has been accurately replicated and is undamaged before mitosis.

Clarify the importance of the G2 checkpoint: This checkpoint helps prevent the propagation of errors in the DNA, which could lead to mutations or cancer. It acts as a quality control step before cell division.