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Questions and Answers
What is DNA Replication?
What is DNA Replication?
What is a replication fork?
What is a replication fork?
A Y-shaped point that results when the two strands of a DNA double helix separate.
What is semiconservative replication?
What is semiconservative replication?
A method of DNA replication in which parental strands separate and act as templates.
What is the role of helicase in DNA replication?
What is the role of helicase in DNA replication?
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What is DNA Polymerase?
What is DNA Polymerase?
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What is the leading strand?
What is the leading strand?
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What is the function of DNA ligase?
What is the function of DNA ligase?
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What does double helix refer to in DNA?
What does double helix refer to in DNA?
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What is a hydrogen bond?
What is a hydrogen bond?
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Study Notes
DNA Replication
- DNA replication is the process of creating identical copies of DNA prior to cell division.
- This ensures that each daughter cell inherits an exact copy of the genetic material.
Replication Fork
- A replication fork forms as two strands of the DNA double helix unwind, creating a Y-shaped structure.
- This fork is essential for the DNA replication process, allowing access to each strand for copying.
Semiconservative Replication
- The semiconservative model of replication suggests that each new DNA molecule consists of one original parental strand and one newly synthesized daughter strand.
- This method preserves half of the original DNA in each replication cycle.
Helicase
- Helicase is an enzyme that unzips the double helix of DNA, separating the two strands.
- This unwinding is a critical preparatory step for DNA replication.
DNA Polymerase
- DNA polymerase is the enzyme responsible for synthesizing the new complementary strand during DNA replication.
- It reads the existing strands and adds the appropriate nucleotides.
Leading Strand
- The leading strand is synthesized continuously in the same direction that the parental DNA unwinds.
- This results in a faster replication process compared to the lagging strand.
DNA Ligase
- DNA ligase is the enzyme that connects individual Okazaki fragments on the lagging strand.
- It forms covalent bonds to seal gaps between these fragments, ensuring the integrity of the new DNA strand.
Double Helix
- The double helix structure of DNA consists of two adjacent polynucleotide strands coiled around each other.
- This shape is crucial for the stability and function of DNA.
Hydrogen Bond
- Hydrogen bonds are weak chemical bonds that form between the slightly positive hydrogen atom of one polar molecule and the slightly negative atom of another.
- In DNA, these bonds hold the two strands together, allowing for the separation needed during replication.
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Description
Explore the fundamental concepts of DNA replication through these flashcards. Each card features key terms such as 'replication fork' and 'semiconservative replication', along with their definitions to enrich your understanding of this critical biological process.
