Mitosis Quiz 12/7/16 – Flashcards
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What is the main difference between a chromatin and sister chromatid?
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Chromatin is the term for DNA and its associated proteins. Sister chromatid is the term we use after the DNA is duplicated during S phase.
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What is the difference between mitosis and cytokinesis?
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Mitosis is the division of the duplicated genetic material found in the nucleus. Whereas cytokinesis is the division of the cytoplasm and rest of the cell organelles.
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What is the relationship between mitosis and cancer?
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Cancer is the result of uncontrolled cell division.
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Why are the spinal cord or nerve tissue injuries permanent?
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The cells of the central nervous system no longer divide after a certain age. This means that any cell that becomes damaged cannot be replaced by new cells.
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Diploid formula?
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(2n)- human formula 2n=46, n=23
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Haploid formula?
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(n)- human formula 2n=46, n=23
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What copies of chromosomes do men have?
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2 copies of chromosomes 1-22 and XY
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What copies of chromosomes do women have?
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2 copies of chromosomes 1-22 and XX
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What is the overall purpose of mitosis?
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To have one cell divide into two identical daughter cells
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What are the different stages of mitosis?
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Interphase,prophase,metaphase,anaphase
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What is interphase?
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In late G2 phase as the cell is preparing to enter mitosis, the centriole duplicates and you have two pairs
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What is prophase?
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The first stage of cell division, before metaphase, during which the chromosomes become visible as paired chromatids and the nuclear envelope disappears.
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What is metaphase?
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The second stage of cell division, between prophase and anaphase, during which the chromosomes become attached to the spindle fibers
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What is anaphase?
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The stage of cell division in which the chromosomes move away from one another to opposite poles of the spindle.
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What is Telophase and Cytokinesis?
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The final stage in mitosis which the sister chromatids reach opposite poles. The small nuclear vesicles in the cell begin to re-form around the group of chromosomes at each end.
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