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Bio Chapter 5!!

QuestionAnswer
why are cells microscopic? DNA Overload and Material Exchange.
What is DNA Overload? Demand on DNA becomes too great
What is material exchange? Cant transport in and out quick enough
What is the stage of the cell cycle does a cell spend 94% of its life in? Interphase
what occurs in interphase? growth
What is the first step in interphase? Gap one
What occurs in Gap one? Growth of cell
What is the second step in interphase? Synthesis
What occurs in synthesis? Synthesis of DNA
What is the third step in interphase? Gap two
What occurs in gap two? Growth of organelles
What stage does a cell only spend 6% of its life in? Mitosis
What happens to chromatin in mitosis? Chromatin is scrunched into chromosomes
What is the first stage of mitosis? prophase
What occurs in prophase? -DNA scrunches into chromosomes -nuclear membrane and nucleolus disappear -spindle fibers form and attach to chromosomes
What is the second stage of mitosis? metaphase
What occurs in metaphase? -chromosomes line up in the middle
What is the third stage of mitosis? anaphase
What occurs in anaphase? -Chromosomes split in the middle -sister chromatids are pulled apart
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