cell division, reproduction, Mitosis, interphase, four stages in mitosis

hasanahatesscience's version from 2015-10-09 00:00

Section 1

Question Answer
cell divisionevery cell in the body originated from one cell through cell division the numbers are increased
cell division is needed forgrowth, repair and replace cells that are damaged, reproduction (bacteria)
asexual reproductionform of reproduction that all new cells formed are exactly the same as original cell (parent cell), GENETIC CONTINUITY
sexual reproductionwhen two different cells combine to from one cell. newly formed cell is genetically different from either parent cell. GENETIC VARIATION
how many chromosones are in a cell46
cell cycleall cells go through cycle of dividing and not dividing. dividing phase is called MITOSIS. non dividing phase is called INTERPHASE.

Section 2

Question Answer
dividing phase is called MITOSIS.
non dividing phase is called INTERPHASE. cell spends most of its time in interphase

Section 3

Question Answer
during interphase, it is divided into 3 stages
g1 (gap 1)cell grows and carries out regular functions
s (synthesis)DNA (chromosones) replicate
g2 (gap 2)cell grows and prepares for Mitosis

Section 4

Question Answer
mitosisprocess by which new body cell are produced for growth, replacing damaged or old cells
mitosis is a form of asexual reproduction

Section 5

Question Answer
prophase is whenchromosones get shorter and thicker. nuclear membrane dissapears. spindle fibres between centrioles
metaphase is whenchromosones line up in the middle of the cell
anaphasechromosones divide and move to opposite sides of the cell
telephasenuclear membrane reforms around each new set of chromosones
cytokinesiscytoplasm and organelles split to form two distinct cells

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