biology chapter 5 – Flashcards
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In which stage of the cell cycle do the nucleus and its contents divide?
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mitosis.
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During the gap 1 stage of the cell cycle, a cell...
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carries out its normal functions.
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Which of the following best describes cytoskeleton?
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division of the cytoplasm.
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Which statement is true about the rates of cell division in eukaryotes?
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they vary greatly within an organism.
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Which of the following limits the maximum size of a cell?
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the ratio of cell surface area to volume.
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The processes of mitosis and cytokinesis produce two identical...
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daughter cells.
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The process of organizing and condensing DNA into its compact form takes place at the start of...
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mitosis.
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Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils?
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histones.
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During which phase of mitosis do sister chromatids separate from each other?
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metaphase.
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Which statement is true for cytokinesis?
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completes the cell cycle.
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Proteins that bind to cells and stimulate cell division are called...
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growth factors.
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What is the term for the programmed death of cells?
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apoptosis.
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Two internal factors that are important in advancing the cell cycle are...
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kinases and cyclins.
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Which phrase best describes cancer?
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uncontrolled cell growth.
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Substances known to produce or promote cancer are called...
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carcinogens.
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The most common form of reproduction among prokaryotes is...
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binary fission.
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What is the difference between binary fission and mitosis?
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binary fission occurs in single-celled organisms only.
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Which of the following statements is true of asexual reproduction?
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it produces genetically identical offspring.
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Starfish that reproduce by splitting into pieces are reproducing by...
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fragmentation.
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Vegetative reproduction, budding, and fragment are examples of...
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asexual mitotic reproduction.
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Which sequence shows the progression from least complex structure to most complex structure?
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cell -> tissue -> organ -> organ system
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Which phrase best describes an organ system?
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group of organs that work together.
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Which of the following is a direct result of a normal cell's ability to express only certain genes?
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cells can differentiate and specialize.
