AP Bio Ch 9 Cellular Reproduction Quiz

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AP Biology Quizzes & Trivia

Cellular reproduction is a process by which cells duplicate their contents and then divide to yield two cells with similar contents such as DNA. This process is very important in understanding human beings reproduction. The true and false quiz below is designed to test out what you know about the process so far.


Questions and Answers
  • 1. 

    Reproduction of the cell and reproduction of the organism require two different kinds of division in bacteria.

    • A. 

      True

    • B. 

      False

    Correct Answer
    B. False
    Explanation
    False. Reproduction of the cell and reproduction of the organism in bacteria both involve the process of cell division. Bacteria reproduce asexually through a process called binary fission, where one cell divides into two identical daughter cells. This is the primary mode of reproduction for bacteria and is essential for their growth and population increase. Therefore, the statement that reproduction of the cell and reproduction of the organism require two different kinds of division in bacteria is incorrect.

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  • 2. 

    Reproduction of the cell and reproduction of the organism require two different kinds of division in eukaryotic organisms such as humans.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    A. True
    Explanation
    In eukaryotic organisms like humans, reproduction of the cell and reproduction of the organism require two different kinds of division. Cell reproduction, known as cell division or mitosis, is the process by which a single cell divides into two identical daughter cells. This is essential for growth, repair, and maintenance of the organism's tissues. On the other hand, reproduction of the organism involves the fusion of two specialized cells, a sperm and an egg, through a process called sexual reproduction. This results in the formation of a new individual with a unique combination of genetic traits. Therefore, it is true that the two types of division are distinct and necessary for different aspects of an organism's life cycle.

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  • 3. 

    Sexual and asexual reproduction require two different kinds of cell divisions.

    • A. 

      True

    • B. 

      False

    Correct Answer
    A. True
    Explanation
    Sexual reproduction involves the fusion of two gametes (sperm and egg) to form a zygote, which then develops into a new individual. This process requires a special type of cell division called meiosis, where the number of chromosomes is halved. On the other hand, asexual reproduction involves the production of offspring without the involvement of gametes. This can occur through various methods such as budding, fission, or fragmentation. Asexual reproduction typically involves mitosis, where cells divide and produce genetically identical offspring. Therefore, sexual and asexual reproduction do indeed require two different types of cell divisions.

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  • 4. 

    The haploid (n) number of chromosomes is found in nearly all cells of humans and most other animals.

    • A. 

      True

    • B. 

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the haploid (n) number of chromosomes is found only in the reproductive cells (sperm and egg) of humans and most other animals. In all other cells of the body, known as somatic cells, the chromosomes exist in pairs, resulting in the diploid (2n) number.

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  • 5. 

    Cell division in eukaryotes involves two separate processes called mitosis and cytokinesis.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    A. True
    Explanation
    The statement is true because cell division in eukaryotes indeed involves two separate processes called mitosis and cytokinesis. Mitosis is the process of dividing the nucleus of the cell into two identical daughter nuclei, while cytokinesis is the division of the cytoplasm and the formation of two separate daughter cells. Both processes are essential for the growth and development of organisms, as well as for the repair and replacement of damaged or old cells.

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  • 6. 

    Only outside influences affect whether a cell can divide or not.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    B. Fasle
    Explanation
    This statement is false. The ability of a cell to divide is not solely determined by outside influences. Internal factors such as the cell's own genetic regulation and internal signaling mechanisms also play a crucial role in controlling cell division. These internal factors can include the presence of certain proteins, the activation of specific genes, and the cell's overall health and condition. Therefore, both external and internal factors influence whether a cell can divide or not.

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  • 7. 

    DNA replication occurs in the stage of the cell cycle just before mitosis.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    B. Fasle
    Explanation
    DNA replication occurs during the S phase of the cell cycle, which happens before the cell enters the mitosis phase. Therefore, the statement that DNA replication occurs just before mitosis is false.

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  • 8. 

    Generally, brain and nerve cells are not able to regenerate after injury because they have left the cell cycle and are unable to return.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    A. True
    Explanation
    Brain and nerve cells, also known as neurons, have a limited ability to regenerate after injury. Unlike other cells in the body, neurons have exited the cell cycle, which means they are no longer able to divide and produce new cells. This lack of regenerative ability is one of the reasons why brain and nerve injuries can have long-lasting effects and often result in permanent damage. Therefore, the statement that brain and nerve cells are generally not able to regenerate after injury is true.

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  • 9. 

    Short rays of microtubules called asters form around the centriole at the poles of dividing plant and animal cells.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    B. Fasle
    Explanation
    Short rays of microtubules called asters do not form around the centriole at the poles of dividing plant and animal cells. Asters are actually formed around the centrosome, which is located near the nucleus of the cell. The centrosome contains a pair of centrioles, and the asters radiate outwards from the centrosome to help organize the spindle fibers during cell division. Therefore, the statement is false.

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  • 10. 

    Cytokinesis begins during the latter part of anaphase.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    A. True
    Explanation
    During the process of cell division, cytokinesis is the final stage where the cytoplasm of the parent cell divides into two daughter cells. It typically begins in the latter part of anaphase, which is the stage when the sister chromatids separate and move towards opposite poles of the cell. This is because the microfilaments contract, forming a contractile ring that constricts the cell membrane, eventually leading to the formation of the two daughter cells. Therefore, the statement "Cytokinesis begins during the latter part of anaphase" is correct.

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  • 11. 

    A microtubule organizing center is located at each pole of the dividing cell in both plants and animals.

    • A. 

      True

    • B. 

      Fasle

    Correct Answer
    A. True
    Explanation
    A microtubule organizing center, also known as a centrosome, is a structure found in cells that helps to organize and separate the microtubules during cell division. It is responsible for the formation of the spindle fibers that attach to the chromosomes and help in their movement during mitosis. In both plants and animals, a microtubule organizing center is indeed located at each pole of the dividing cell to ensure proper cell division and distribution of genetic material. Therefore, the statement is true.

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