Semi-conservative mechanism

    Cards (62)

    • What is DNA replication?
      The process of making an exact DNA copy
    • Why is DNA replication crucial for cell growth?
      Each new cell needs its own complete DNA
    • How does DNA replication ensure inheritance?
      It passes genes from parents to offspring
    • What is the direction of DNA replication shown in the image?
      The DNA replication is shown to be bidirectional, with replication occurring in both the 3' to 5' and 5' to 3' directions.
    • What is the process shown in the image called?
      Semiconservative replication of DNA
    • Why is the DNA replication process shown in the image called "semiconservative"?
      Because each new DNA molecule contains one original strand and one newly synthesized strand
    • What does each new DNA molecule consist of after replication?
      One original and one new strand
    • What is the name of the proteins shown in the image that help unwind the DNA double helix?
      Initiator proteins
    • What are the main steps in DNA replication?
      1. DNA double helix "unzips"
      2. Each strand serves as a template
      3. New complementary strands are built
      4. Two identical DNA molecules are formed
    • What is the purpose of the initiator proteins shown in the image?
      The initiator proteins help initiate the replication of DNA by unwinding the double helix structure.
    • Why is DNA replication described as semi-conservative?
      Because it contains one original and one new strand
    • How does the bidirectional nature of DNA replication shown in the image contribute to the efficiency of the process?
      It allows for the DNA to be replicated in both directions simultaneously, doubling the rate of replication
    • How does semi-conservative replication differ from conservative replication?
      In conservative replication, the parent DNA remains unchanged
    • What remains unchanged in conservative DNA replication?
      The parent DNA
    • If the DNA replication process was not semiconservative, how would that affect the genetic information passed on to daughter cells?
      The genetic information would not be accurately replicated and passed on
    • How does the semiconservative replication of DNA ensure the genetic information is accurately passed on to daughter cells?
      • Each new DNA molecule contains one original strand and one newly synthesized strand
      • This ensures that the genetic information is accurately replicated and passed on to daughter cells
    • What role do the separated strands play in DNA replication?
      They act as templates for new strands
    • What are the steps involved in semi-conservative DNA replication?
      1. Parent DNA strands separate completely
      2. Each separated strand acts as a template
      3. New DNA nucleotides are added using base-pairing rules
    • What shape does the replication fork resemble?
      Y-shaped
    • What is the first step in the semi-conservative mechanism of DNA replication?
      Initiation
    • What occurs during the initiation step of DNA replication?
      DNA unwinds at the origin, forming a replication fork
    • What does the term "semi-conservative" refer to in DNA replication?
      Each new DNA molecule has one original strand
    • What is the result of the termination step in DNA replication?
      Two identical DNA molecules are formed
    • What do DNA polymerases add to the template strands?
      Free nucleotides
    • What is the role of each DNA strand during strand separation?
      Each strand serves as a template for new strands
    • How do DNA polymerases ensure accuracy during replication?
      They proofread for errors
    • What is unique about the two new DNA molecules formed after replication?
      Each has one original and one new strand
    • What are the components of the DNA strands shown in the image?
      • Original DNA strands (blue)
      • Newly synthesized DNA strands (orange)
    • If a cell undergoes 10 rounds of DNA replication using the Semi-Conservative Replication Model, how many DNA molecules would be present in the final generation?
      1024
    • If a parent strand is 3'-TACGT-5', what is the new complementary strand?

      5'-ATGC-3'
    • What is the key difference between Conservative and Semi-Conservative Replication as shown in the image?
      In Semi-Conservative Replication, each new DNA strand contains one original and one newly synthesized strand, while in Conservative Replication, the original DNA strands are completely replicated
    • What base pairs with adenine (A) during DNA replication?
      Thymine (T)
    • What base pairs with guanine (G) during DNA replication?
      Cytosine (C)
    • What is the process illustrated in the diagram?
      Semi-conservative replication
    • What color represents the parent DNA molecule in the diagram?
      Blue
    • What happens to the parent DNA molecule during semi-conservative replication?
      The parent DNA molecule unzips and each strand serves as a template for new daughter strands
    • What is the name of the replication model shown in the image?
      Semi-Conservative Replication Model
    • What is the significance of having one original strand in each daughter molecule?
      It ensures perfect maintenance of genetic information
    • What happens to the parent DNA strands during replication?
      They separate completely
    • What happens to the parent DNA molecule during replication?
      It unzips to form templates