DNA Replication And Protein Synthesis

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| By Jemccaul
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Jemccaul
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Quizzes Created: 1 | Total Attempts: 212
Questions: 5 | Attempts: 212

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DNA And Protein Synthesis Quizzes & Trivia

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Questions and Answers
  • 1. 

    During this process, parental strands of DNA separate, serve as templates, and produce DNA molecules that have one strand of parental DNA and one strand of new DNA.

    • A.

      Semirepublican conservatism

    • B.

      Meiosis

    • C.

      Doubling

    • D.

      Semiconservative Replication

    Correct Answer
    D. Semiconservative Replication
    Explanation
    Semiconservative replication is the correct answer because it accurately describes the process of DNA replication. In semiconservative replication, the parental strands of DNA separate, and each strand serves as a template for the synthesis of a new DNA strand. The resulting DNA molecules have one strand of parental DNA and one strand of newly synthesized DNA, hence the term "semiconservative." This process ensures that the genetic information is preserved and accurately passed on to the daughter cells during cell division.

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  • 2. 

    During which phase of Mitosis and Meiosis does DNA replication occur?

    • A.

      Interphase

    • B.

      Prophase

    • C.

      Metaphase

    • D.

      Anaphase

    Correct Answer
    A. Interphase
    Explanation
    During the interphase of both mitosis and meiosis, DNA replication occurs. Interphase is the longest phase of the cell cycle and is divided into three stages: G1, S, and G2. During the S phase, DNA replication takes place, where the DNA molecules are duplicated to form sister chromatids. This ensures that each daughter cell receives a complete set of genetic information during cell division. Therefore, the correct answer is interphase.

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  • 3. 

    The enzyme responsible for unwinding and unzipping the double helix.

    • A.

      DNA Ligase

    • B.

      RNA Polymerase

    • C.

      DNA Helicase

    • D.

      DNA Polymerase

    Correct Answer
    D. DNA Polymerase
    Explanation
    DNA Polymerase is the correct answer because it is the enzyme responsible for unwinding and unzipping the double helix during DNA replication. It catalyzes the synthesis of new DNA strands by adding complementary nucleotides to the existing strands. DNA Ligase, RNA Polymerase, and DNA Helicase have different functions in DNA replication and transcription processes. DNA Ligase is responsible for joining the Okazaki fragments on the lagging strand, RNA Polymerase synthesizes RNA from a DNA template during transcription, and DNA Helicase unwinds the double helix ahead of the replication fork.

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  • 4. 

    The three steps of DNA replication are?

    Correct Answer
    Unwinding Base pairing Joining
    Explanation
    The three steps of DNA replication are unwinding, base pairing, and joining. Unwinding refers to the separation of the two strands of DNA by breaking the hydrogen bonds between the base pairs. Base pairing involves the complementary pairing of nucleotides, where adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Joining refers to the formation of phosphodiester bonds between the nucleotides on the newly synthesized DNA strand, resulting in the formation of two identical DNA molecules.

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  • 5. 

    Remember, that the 2 strands of DNA are duplicated differently.  The leading strand built continuously from the 3’ end.  The lagging strand is synthesized discontinuously in small fragments called:

    • A.

      Okazaki Fragments

    • B.

      Oahu Fragments

    • C.

      DNA Pieces

    • D.

      Guanine

    Correct Answer
    A. Okazaki Fragments
    Explanation
    The correct answer is Okazaki Fragments. Okazaki fragments are short segments of DNA that are synthesized discontinuously on the lagging strand during DNA replication. They are formed in the opposite direction of the replication fork and are later joined together by DNA ligase to form a continuous strand. This process allows for efficient and accurate replication of both strands of DNA.

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  • Current Version
  • Mar 18, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • May 07, 2009
    Quiz Created by
    Jemccaul
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