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Chapter 11.docx

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School
Temple University
Department
Biology
Course
BIOL 1001
Professor
Smutzer
Semester
Spring

Description
Chap 11 1. Cell Cycle ­  Cellular reproduction  : a new generation of cells, involves Mitosis followed by  cytokinesis ­ Once S begins, the cycle has a built­in molecular break in G1 ­  Post­mitotic cell : diploid cells that don’t undergo mitosis (most neurons) ­ Adverse condition can stop cell cycle (nutrient deprieved) ­  Spindle Apparatus  : two distinct sets of microtubules, extends from each of the  cell poles, moves chromosomes during mitosis ­  Kinetochore  : site where chromosomes attach to the spindle 2. Mitosis ­ Involves sister chromatids ­ Asexual reproduction ­ Occurs in somatic cells ­ Produces clones of cells ­ 2 diploid cells  3. Interphase ­ Longest part, period of nuclear division followed by cytoplasmic division ­ Cell increases in mass, cytoplasmic components double, DNA is duplicated  ­
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