Topic 2 - Keystone Sample Quiz

11 Questions | Total Attempts: 731

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Topic 2 - Keystone Sample Quiz

Cells & Cell structure Content


Questions and Answers
  • 1. 
    Which sequence of terms represents a decrease from the greatest number of structures to the least number of structures present in a cell?
    • A. 

      nucleus → gene → chromosome

    • B. 

      gene → nucleus → chromosome

    • C. 

      Gene → chromosome → nucleus

    • D. 

      Chromosome → gene → nucleus

  • 2. 
    Some human body cells are shown in the diagrams below. These groups of cells represent different
    • A. 

      Tissues in which similar cells function together

    • B. 

      Organs that help to carry out a specific life activity

    • C. 

      Systems that are responsible for a specific life activity

    • D. 

      organelles that carry out different functions

  • 3. 
    Genes involved in the production of abnormal red blood cells have an abnormal sequence of
    • A. 

      ATP molecules

    • B. 

      Amino acids

    • C. 

      Sugars

    • D. 

      Bases

  • 4. 
    Research has shown that certain body cells, known as stem cells, can develop into a variety of specialized cells. Various factors can cause stem cells to develop into different types of mature cells. These different types of mature cells result from
    • A. 

      Different antibodies and mitotic cell division

    • B. 

      Identical genetic codes and meiotic cell division

    • C. 

      Different environments of the cells and the functioning of different parts of the genetic code

    • D. 

      Similar steps in the development of the cells and a reduction in the number of chromosomes in each cell

  • 5. 
    Which statement is true of both mitosis and meiosis? Both are involved in asexual reproduction.
    • A. 

      Both are involved in asexual reproduction.

    • B. 

      Both occur only in reproductive cells.

    • C. 

      The number of chromosomes is reduced by half.

    • D. 

      DNA replication occurs before the division of the nucleus.

  • 6. 
    Down syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of
    • A. 

      An error in the process of cloning

    • B. 

      An error in meiotic cell division

    • C. 

      A gene mutation

    • D. 

      Replication of a single chromosome during mitosis

  • 7. 
    Part of embryonic development in a species is illustrated in the diagram below. Which set of factors plays the most direct role in controlling the events shown in the diagram?
    • A. 

      Genes, hormones, and cell location

    • B. 

      Antibodies, insulin, and starch

    • C. 

      ATP, amino acids, and inorganic compounds

    • D. 

      Abiotic resources, homeostasis, and selective breeding

  • 8. 
    Although all of the cells of a human develop from one fertilized egg, the human is born with many different types of cells. Which statement best explains this observation?
    • A. 

      Developing cells may express different parts of their identical genetic instructions.

    • B. 

      Mutations occur during development as a result of environmental conditions.

    • C. 

      All cells have different genetic material.

    • D. 

      Some cells develop before other cells.

  • 9. 
    What is the function of the cell membrane?
    • A. 

      Packages what is made in the cell.

    • B. 

      controls cell activities or contains the genetic codes.

    • C. 

      Respiration or energy release or production of ATP

    • D. 

      Regulates what enters and leaves the cell.

  • 10. 
    Name the cellular organelle labelled C.
    • A. 

      Cytoplasm

    • B. 

      Mitochondria

    • C. 

      Nucleus

    • D. 

      Cell/plasma membrane

  • 11. 
    What is the main function of a vacuole in a cell?
    • A. 

      Storage

    • B. 

      Coordination

    • C. 

      Synthesis of molecules

    • D. 

      Release of energy

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