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What is the primary role of histones in eukaryotic cells?

  • To bind to centromeres during cell division
  • To promote cytokinesis
  • To package DNA into nucleosomes (correct)
  • To facilitate the replication of DNA

    • What occurs during the S phase of interphase?

  • Centrosomes separate
  • RNA is synthesized
  • DNA is replicated (correct)
  • The cell undergoes physical division

    • Which phase of mitosis is characterized by the alignment of chromosomes along the cell's equatorial plane?

  • Prophase
  • Anaphase
  • Telophase
  • Metaphase (correct)

    • What happens to sister chromatids after they are separated during cell division?

    <p>Each is considered a full-fledged chromosome</p> Signup and view all the answers

    Which of the following is part of the mitotic phase of the cell cycle?

    <p>Cytokinesis</p> Signup and view all the answers

    During which phase do microtubules shorten at the kinetochore?

    <p>Anaphase</p> Signup and view all the answers

    Which structure controls chromosome movement during the mitotic phase?

    <p>Spindle apparatus</p> Signup and view all the answers

    In which phase do centrosomes migrate to opposite ends of the cell?

    <p>Prometaphase</p> Signup and view all the answers

    What type of cells do gametes represent in terms of genetic complement?

    <p>Haploid cells with one set of chromosomes</p> Signup and view all the answers

    Which phase is NOT part of mitosis?

    <p>Cytokinesis</p> Signup and view all the answers

    What is the primary result of meiosis?

    <p>Four unique haploid gametes</p> Signup and view all the answers

    What defines chromatin in the context of cellular division?

    <p>A loosening structure that condenses during cell division</p> Signup and view all the answers

    Which of the following correctly describes the genomic organization within a eukaryotic cell?

    <p>DNA is packaged into chromosomes for efficient management</p> Signup and view all the answers

    Which statement about somatic cells is false?

    <p>Somatic cells are reproductive in nature</p> Signup and view all the answers

    What type of cellular division primarily results in growth and development in multicellular organisms?

    <p>Mitosis</p> Signup and view all the answers

    Which statement about cell division types is accurate?

    <p>Almost all cellular division occurs through mitosis</p> Signup and view all the answers

    What occurs during anaphase in mitosis?

    <p>Chromosomes move toward the poles along stationary microtubules.</p> Signup and view all the answers

    What is the main difference in cytokinesis between animal and plant cells?

    <p>Animal cells undergo cleavage, while plant cells form a cell plate.</p> Signup and view all the answers

    What drives the regulation of the cell cycle?

    <p>Chemical signals in cytoplasm.</p> Signup and view all the answers

    What is the role of the G1 checkpoint in the cell cycle?

    <p>It signals the cell to enter a resting state if conditions are unfavorable.</p> Signup and view all the answers

    What happens at the M checkpoint during mitosis?

    <p>The cell verifies full chromosome attachment to spindle fibers.</p> Signup and view all the answers

    What can happen if a cell does not receive a go-ahead signal at the G1 checkpoint?

    <p>The cell will enter the G0 phase and stop dividing.</p> Signup and view all the answers

    During which phase does the cell receive a stop signal if chromosomes are not fully attached?

    <p>M checkpoint.</p> Signup and view all the answers

    What does the Cell Cycle Control System ensure?

    <p>Cell division varies based on cell type and conditions.</p> Signup and view all the answers

    What role do cyclins play in cell cycle control?

    <p>They are proteins whose levels fluctuate cyclically.</p> Signup and view all the answers

    What is MPF and its function in the cell cycle?

    <p>A cyclin-Cdk complex that triggers cell passage past the G2 checkpoint.</p> Signup and view all the answers

    What is meant by anchorage dependence in cell division?

    <p>Cells require attachment to a substratum to divide.</p> Signup and view all the answers

    Which characteristic distinguishes malignant tumors from benign tumors?

    <p>Malignant tumors can metastasize to other body parts.</p> Signup and view all the answers

    How do cancer cells typically bypass normal cell cycle controls?

    <p>They can convey growth factor signals without the actual growth factor.</p> Signup and view all the answers

    What type of cancer treatment uses high-energy radiation?

    <p>Radiation therapy</p> Signup and view all the answers

    What is the first step typically involved in cancer treatment?

    <p>Surgery to remove a tumor</p> Signup and view all the answers

    What is a common treatment strategy that utilizes the body's immune system?

    <p>Immunotherapy</p> Signup and view all the answers

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