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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

DNA Repair

Anatomy & Physiology

3. Energy & Cell Processes

DNA Repair

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Multiple Choice

The incorporation of an incorrect base into the DNA during replication __________.

will almost certainly lead to the death of the cell

cannot be repaired, and a new mutation will invariably result

will trigger the cell to destroy the new strand, and replication will begin again

is virtually impossible, as the accuracy of DNA polymerase is such that errors almost never occur

can be repaired by the mismatch repair system

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Verified step by step guidance

Understand the context of DNA replication: During DNA replication, the DNA polymerase enzyme synthesizes a new strand by adding nucleotides complementary to the template strand.

Recognize the potential for errors: Although DNA polymerase is highly accurate, errors can occur, leading to the incorporation of incorrect bases.

Learn about the mismatch repair system: This system is a cellular mechanism that identifies and repairs incorrect bases incorporated during DNA replication.

Explore how the mismatch repair system works: It detects mismatches by recognizing distortions in the DNA helix and removes the incorrect base, replacing it with the correct one.

Appreciate the importance of repair systems: These systems are crucial for maintaining genetic stability and preventing mutations that could lead to cell malfunction or disease.