Ch 11-13

20 Questions | Total Attempts: 58

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Cell Division Quizzes & Trivia

Let's see what you know about siganling and cell division!


Questions and Answers
  • 1. 
    In the yeast signal transduction pathway, after both types of mating cells have released the mating factors and the factors have bound to specific receptors on the correct cells,
    • A. 

      Binding induces changes in the cells that lead to cell fusion.

    • B. 

      The cells then produce the a factor and the a factor.

    • C. 

      One cell nucleus binds the mating factors and produces a new nucleus in the opposite cell.

    • D. 

      The cell membranes fall apart, releasing the mating factors that lead to new yeast cells. the cell membranes fall apart, releasing the mating factors that lead to new yeast cells. the cell membranes fall apart, releasing the mating factors that lead to new yeast cells.

    • E. 

      A growth factor is secreted that stimulates mitosis in both cells.

  • 2. 
    From the perspective of the cell receiving the message, the three stages of cell signaling are
    • A. 

      The paracrine, local, and synaptic stages.

    • B. 

      Signal reception, signal transduction, and cellular response.

    • C. 

      Signal reception, nucleus disintegration, and new cell generation.

    • D. 

      The alpha, beta, and gamma stages.

  • 3. 
    The process of transduction usually begins
    • A. 

      When the chemical signal is released from the alpha cell.

    • B. 

      When the signal molecule changes the receptor protein in some way.

    • C. 

      After the target cell divides.

    • D. 

      After the third stage of cell signaling is completed.

    • E. 

      When the hormone is released from the gland into the blood.

  • 4. 
    What would be true for the signaling system in an animal cell that lacks the ability to produce GTP?
    • A. 

      It would not be able to activate and inactivate the G protein on the cytoplasmic side of the plasma membrane.

    • B. 

      It could activate only the epinephrine system.

    • C. 

      It would be able to carry out reception and transduction, but would not be able to respond to a signal.

  • 5. 
    Membrane receptors that attach phosphates to specific animo acids in proteins are
    • A. 

      Not found in humans.

    • B. 

      Called receptor tyrosine-kinases

    • C. 

      A class of GTP G-protein signal receptors.

    • D. 

      Associated with several bacterial diseases in humans.

  • 6. 
    Which of the substances below is a protein that can hold several other relay proteins as it binds to an activated membrane receptor?
    • A. 

      Active transport factor

    • B. 

      Third messenger

    • C. 

      Ligand

    • D. 

      Scaffolding protein

  • 7. 
    If there are 20 chromatids in a cell, how many centromeres are there?
    • A. 

      10

    • B. 

      20

    • C. 

      30

    • D. 

      40

  • 8. 
    Which term describes centrioles beginning to move apart in animal cells?
    • A. 

      Anaphase

    • B. 

      Telophase

    • C. 

      Metaphase

    • D. 

      Prophase

  • 9. 
    A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce 2 nuclei each containing how many chromosomes?
    • A. 

      12

    • B. 

      16

    • C. 

      23

    • D. 

      46

  • 10. 
    Regarding mitosis and cytokinesis, one difference between higher plants and animals is that in plants
    • A. 

      The spindles contain microfibrils in addition to microtubules, whereas animal spindles do not contain microfibrils

    • B. 

      Sister chromatids are identical, but they differ from one another in animals

    • C. 

      A cell plate begins to form at telophase, whereas in animals a cleavage furrow is initiated at that stage

    • D. 

      Chromosomes become attached to the spindle at prophase, whereas in animals chromosomes to no become attached until anaphase

  • 11. 
    The somatic cells derived from a single celled zygote divide by which process?
    • A. 

      Meiosis

    • B. 

      Mitosis

    • C. 

      Cytokinesis alone

  • 12. 
    Which of the following is a protein maintained at constant levels throughout the cell cycle that requires cyclin to become catalytically active?
    • A. 

      PDGF

    • B. 

      MPF

    • C. 

      Protein kinase

    • D. 

      Cyclin

    • E. 

      Cdk

  • 13. 
    Which of the following triggers the cell's passage past the G2 checkpoint into mitosis?
    • A. 

      PDGF

    • B. 

      MPF

    • C. 

      Protein kinase

    • D. 

      Cyclin

    • E. 

      Cdk

  • 14. 
    DNA is replicated at this time of the cell cycle:
    • A. 

      G0

    • B. 

      G1

    • C. 

      S

    • D. 

      G2

  • 15. 
    Nerve and muscle cells are in this phase most of the time:
    • A. 

      G0

    • B. 

      G1

    • C. 

      S

    • D. 

      G2

  • 16. 
    Tetrads of chromosomes are aligned at the equator
    • A. 

      Prophase 1

    • B. 

      Metaphase 1

    • C. 

      Anaphase 1

    • D. 

      Telophase 1

    • E. 

      Prophase 2

    • F. 

      Metaphase 2

    • G. 

      Anaphase 2

    • H. 

      Telophase 2

  • 17. 
    Synapsis of homologous pairs occurs, followed by crossing over:
    • A. 

      Prophase 1

    • B. 

      Metaphase 1

    • C. 

      Anaphase 1

    • D. 

      Telophase 1

    • E. 

      Prophase 2

    • F. 

      Metaphase 2

    • G. 

      Anaphase 2

    • H. 

      Telophase 2

  • 18. 
    Centromeres of sister chromatids disjoin and chromatids separate:
    • A. 

      Prophase 1

    • B. 

      Metaphase 1

    • C. 

      Anaphase 1

    • D. 

      Telophase 1

    • E. 

      Prophase 2

    • F. 

      Metaphase 2

    • G. 

      Anaphase 2

    • H. 

      Telophase 2

  • 19. 
    Chiasmata are what we see under the microscope that let us know which of the following is occurring:
    • A. 

      Asexual reproduction

    • B. 

      Meiosis 2

    • C. 

      Anaphase 2

    • D. 

      Crossing over

  • 20. 
    Homologous chromosomes move toward opposite poles of a dividing cells during
    • A. 

      Mitosis

    • B. 

      Meiosis 1

    • C. 

      Meiosis 2

    • D. 

      Fertilization