Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

16. Cell Division

DNA Replication

Cell Biology

16. Cell Division

DNA Replication

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Multiple Choice

DNA replication occurs differently at telomeres.

True

False

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Verified step by step guidance

Understand the structure and function of telomeres: Telomeres are repetitive nucleotide sequences at the ends of chromosomes that protect them from deterioration or fusion with neighboring chromosomes.

Learn about the enzyme telomerase: Telomerase is an enzyme that adds DNA sequence repeats to the telomere regions, compensating for the shortening that occurs during DNA replication.

Explore the process of DNA replication: During DNA replication, the leading strand is synthesized continuously, while the lagging strand is synthesized in short segments called Okazaki fragments.

Examine how telomeres are replicated: Due to the end-replication problem, the lagging strand cannot be fully replicated by conventional DNA polymerases, leading to progressive shortening of telomeres with each cell division.

Consider the role of telomerase in telomere replication: Telomerase extends the telomeres by adding repetitive sequences, allowing for complete replication of the chromosome ends, which is a unique aspect of telomere replication compared to other chromosomal regions.