Questions and Answers
What happens in Step 1 of DNA replication?
Helicase unzips the DNA molecule
What occurs in Step 2 of DNA replication?
Primase attaches RNA primers to the DNA strand to begin replication
What is the role of DNA polymerase in Step 3 of DNA replication?
DNA polymerase attaches nucleotides to the DNA strand
What happens during Step 4 of DNA replication?
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What is the end product of DNA replication in Step 5?
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Study Notes
Steps of DNA Replication
- Helicase Action: The enzyme helicase unwinds the double helix structure of DNA, separating the two strands to create a replication fork.
- Role of Primase: Primase synthesizes short RNA primers that provide a starting point for the synthesis of new DNA strands, critical for the initiation of replication.
- Function of DNA Polymerase: DNA polymerase attaches complementary nucleotides to the growing DNA strand, facilitating the elongation process and ensuring accurate base pairing.
- Ligase's Role: DNA ligase connects Okazaki fragments on the lagging strand by sealing gaps in the phosphate backbone, ensuring the integrity of the new DNA molecule.
- Final Outcome: The replication process results in the formation of two identical DNA molecules, each containing one original and one newly synthesized strand, maintaining genetic fidelity.
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Description
This quiz provides flashcards detailing the steps of DNA replication. Each card outlines a specific step in the process, from helicase unzipping the DNA to ligase filling in the phosphate backbone. Perfect for students studying molecular biology or genetics.
