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DNA Replication Practice Quiz

Test your knowledge on DNA replication with this quiz. Explore the structure, nucleotides, enzymes, and processes involved in DNA replication. Enhance your understanding with detailed answers and resources.

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DNA Replication Practice Quiz

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  1. DNA Replication Practice Quiz

  2. Who discovered the structure of DNA?

  3. Answer: • Watson and Crick

  4. What are the four nucleotides that make up the structure of DNA?

  5. Answer: • A, T, G, C

  6. How do the bases always match up?

  7. Answer: • A=T • G=C

  8. What makes up the backbones of DNA?

  9. Answer: • Sugar and Phosphate

  10. Name the three enzymes that we discussed in class in regard to DNA Replication.

  11. Answer: • DNA Helicase • DNA Polymerase • DNA Ligase

  12. Write what each of the following enzymes do:DNA HelicaseDNA PolymeraseDNA Ligase

  13. Answer: • DNA Helicase – Unzips the DNA strand, or breaks the hydrogen bonds between bases. • DNA Polymerase – Puts in the new bases, in other words matches up A to T and G to C. • DNA Ligase – Seals in the gaps and completes the strand.

  14. When nucleotides get added to the new strand, what end to they get added to?

  15. Answer: • 3’ end only

  16. What is the shape of DNA?

  17. Answer: • Double Helix

  18. DNA Replication is described using two Semi’s, What are they?

  19. Answer: • Semi Conservative – Each new cell gets one old strand and one new strand. • Semi Discontinuous – there is a lagging strand and a leading strand.

  20. Describe what it means to be semi discontinuous.

  21. Answer:

  22. Show the Enzymes in DNA Replication.

  23. Answer: • DNA Polymerase – remember it has two arms (not shown accurately in the picture above, refer to notes). • DNA Ligase – fills in the ozaki fragments and completes the strand.

  24. How often does DNA Polymerase make a mistake?

  25. Answer: • 1 in every 10,000 base pairs • After enzymes double check the strand, a mistake is made 1 in every 1 billion base pairs.

  26. What things can damage DNA?

  27. Answer: • Chemicals • Sunlight • Normal mutations or mistakes in copying

  28. Watch the following Videos to help show the process of DNA Replication. • https://www.youtube.com/watch?v=5qSrmeiWsuc • https://www.youtube.com/watch?v=v8gH404a3Gg • https://www.youtube.com/watch?v=FBmO_rmXxIw

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