Exam (elaborations)
Mitosis and Cancer Questions and Answers
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Exam of 4 pages for the course cancer at cancer (Mitosis and Cancer)
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Mitosis and Cancerwhat is the control of the cell cycle - answer proteins
what happens when enzymes attach to the cyclin - answer they become activated
what happens when the cell loses control of mitosis - answer cancer (tumor)
what is cancer - answer cancer os a class of diseases characterized by uncontrolled cell
division
benign - answer cancer cells typically remain clustered together and don't spread
malignant - answer cancer cells often break away and spread to other areas of the body
through the blood stream or lymphatic system
what is cancer caused by - answer genetic and environmental
what are environmental factors that are known to cause cancer caused by -
answercarcinogens
what type of diets help prevent cancer - answerdiets low in fat and high in fiber
what is included in the structure of a chromosome - answer2 sister chromatids and a
centromere
interphase - answer-cell spends most of its time here
- chromosomes are replicated
prophase - answer-longest phase of mitosis
-chromatin coils to form visible chromosomes
-nucleus disappears
-centricoles move to opposite sides of the cell
-spindle fibers begin to form between the centricoles
metaphase - answer-shortest and second phase of mitosis
- the doubled chromosomes become attached to the spindle fibers by their centricoles
-the chromosomes are pulled apart by the spindle fibers and line up in the center of the
cell (along the equator)
anaphase - answer-third phase of mitosis
-begins by the separation of sister chromatids
-the chromatids are pulled to the opposite sides of the cell by the spindle fibers
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