DNA, Mutations And Mitosis Quiz

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DNA, Mutations And Mitosis Quiz - Quiz

This quiz is to determine if you know the pairing of DNA structure. Also, it lets you know the difference between replication and when mutation occurs. It changes the DNA structure and protein is produced. Finally, you are preparing youself for mitosis and the stages that occur in this phase.


Questions and Answers
  • 1. 

    What will most likely be the effect of the change in the DNA molecule ?

    • A.

      The DNA molecule will be unable to replicate

    • B.

      The change will cause a harmful mutation

    • C.

      The organism will be unable to reproduce

    • D.

      The DNA moecule will code for a different protein

    Correct Answer
    D. The DNA moecule will code for a different protein
    Explanation
    The given answer suggests that the effect of the change in the DNA molecule will be that it will code for a different protein. This means that the change in the DNA sequence will result in a different set of instructions being given to the cell for protein synthesis. As a result, the cell will produce a protein with a different structure or function than what would have been produced with the original DNA sequence. This change in protein coding can have various effects on the organism, depending on the specific protein and its role in cellular processes.

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  • 2. 

    The third phase of mitosis is

    • A.

      Interphase

    • B.

      Metaphase

    • C.

      Prophase

    • D.

      Anaphase

    Correct Answer
    B. Metaphase
    Explanation
    Metaphase is the correct answer because it is the third phase of mitosis. During metaphase, the chromosomes align at the equatorial plate of the cell. This alignment ensures that each daughter cell receives an equal number of chromosomes during cell division. The chromosomes are also fully condensed and attached to the spindle fibers at their centromeres during metaphase. This phase is crucial for the accurate distribution of genetic material to the daughter cells.

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  • 3. 

    Mutation is best described as

    • A.

      The formation of a DNA molecule

    • B.

      A change in DNA sequence

    • C.

      The structure of a DNA molecule

    • D.

      A nucleotide in the DNA molecule

    Correct Answer
    B. A change in DNA sequence
    Explanation
    Mutation is best described as a change in DNA sequence. Mutations can occur due to errors during DNA replication, exposure to mutagens, or other genetic factors. These changes can alter the sequence of nucleotides in the DNA molecule, leading to variations in the genetic code. Mutations can have various effects, ranging from no noticeable impact to causing genetic disorders or even contributing to evolution. Therefore, out of the given options, "A change in DNA sequence" is the most accurate description of mutation.

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  • 4. 

    What is the third phase of mitosis ?

    • A.

      Metaphase

    • B.

      Prophase

    • C.

      Anaphase

    • D.

      Telophase

    Correct Answer
    C. Anaphase
    Explanation
    Anaphase is the correct answer because it is the third phase of mitosis. During anaphase, the sister chromatids separate and move towards opposite poles of the cell. This is made possible by the spindle fibers pulling the chromatids apart. The cell begins to elongate as the chromosomes move towards the poles. Anaphase is a crucial stage in ensuring that each daughter cell receives the correct number of chromosomes.

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  • 5. 

    What type of molecule is shown ?

    • A.

      Protein

    • B.

      Nucleic Acid

    • C.

      Lipid

    • D.

      Carbohydrate

    Correct Answer
    B. Nucleic Acid
    Explanation
    The molecule shown is a nucleic acid because it consists of a chain of nucleotides, which are the building blocks of nucleic acids. Nucleic acids, such as DNA and RNA, play a crucial role in storing and transmitting genetic information in cells. They have a distinct structure with a sugar-phosphate backbone and nitrogenous bases, which are clearly visible in the molecule shown. Proteins, lipids, and carbohydrates have different structures and functions, making them incorrect options for the type of molecule shown.

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  • 6. 

    DNA is copied during a process called:

    • A.

      Transformation

    • B.

      Replication

    • C.

      Translation

    • D.

      Transcription

    Correct Answer
    B. Replication
    Explanation
    During the process of DNA replication, the DNA molecule unwinds and separates into two strands. Each strand serves as a template for the synthesis of a new complementary strand, resulting in two identical copies of the original DNA molecule. This process is crucial for cell division and the transmission of genetic information from one generation to the next. Transformation, translation, and transcription are all important cellular processes, but they do not involve the direct copying of DNA.

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  • 7. 

    During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?

    • A.

      Prophase

    • B.

      Telophase

    • C.

      Metaphase

    • D.

      Anaphase

    Correct Answer
    C. Metaphase
    Explanation
    Metaphase is the correct answer because during this phase of mitosis, the chromosomes align themselves along the equatorial plane, also known as the metaphase plate, at the center of the cell. This alignment ensures that each daughter cell will receive an equal number of chromosomes during cell division. The chromosomes are fully condensed and attached to the spindle fibers at their centromeres, preparing for their separation in the subsequent phase, anaphase.

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  • 8. 

    What is the process by which a single parent reproduces by itself ?

    • A.

      Asexual Reproduction

    • B.

      Histone

    • C.

      Genetic Engineering

    • D.

      Sexual Reproduction

    Correct Answer
    A. Asexual Reproduction
    Explanation
    Asexual reproduction is the process by which a single parent reproduces by itself. In this type of reproduction, there is no involvement of gametes or the fusion of genetic material from two parents. Instead, the parent organism produces offspring that are genetically identical to itself. This can occur through various methods such as binary fission, budding, or fragmentation. Asexual reproduction is common among many organisms, including bacteria, fungi, and some plants and animals. It allows for rapid population growth and the ability to colonize new environments efficiently.

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  • 9. 

    Asexual reproduction is also known as what?

    • A.

      Meiosis

    • B.

      Mitosis

    • C.

      Spontaneous Generation

    • D.

      Bacterial Recombination

    Correct Answer
    B. Mitosis
    Explanation
    Asexual reproduction is a type of reproduction that involves only one parent and produces offspring that are genetically identical to the parent. This process is known as mitosis, where the parent cell divides into two identical daughter cells. Meiosis, on the other hand, is a type of cell division that produces gametes with half the number of chromosomes as the parent cell. Spontaneous generation refers to the outdated belief that living organisms can arise spontaneously from non-living matter. Bacterial recombination is a process where genetic material is exchanged between bacteria.

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  • 10. 

    The stages of the cell cycle are shown in the random order in the diagrams below.What is the correct sequence of diagrams for the cell cycle , beginning with prophase ?

    • A.

      3,1,4,2,5

    • B.

      2,3,1,5,4

    • C.

      5,3,1,2,4

    • D.

      4,1,2,5,3

    Correct Answer
    B. 2,3,1,5,4

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  • Current Version
  • May 16, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 14, 2009
    Quiz Created by
    Raleighegypt
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