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Mitosis

Terms in this set (20)

Sutton-Beveri chromosome theory
Chromosomes are the basis for all genetic inheritance
Mitosis
Orderly division of chromosomes in the nucleus
Chromosomes
x-shaped; made of DNA; coiled around Histones
Interphase
Normal growing and functioning stage of a cell's life cycle; Dna in form of chromatin
Chromatin
Uncoiled DNA
Prophase
Nuclear membrane breaks down; chromatin condenses and is visible; centrioles move to opposite sides and create spindle fibers
Spindles
attach to chromosomes
Metaphase
Spindle pull centrometers of the chromosome to the center of the cell
Anaphase
Chromatids pulled to opposite sides of the cell; referred to as single chromosome
Telophase
Chromosomes move to opposite ends of the cell; Chromosomes unwind to make chromatin; cytokinesis occurs to create 2 daughter cells
Chromatids
sister chromatids
Centromere
Connection of the chromatids in the center
Limits to cell growth
Demand on DNA; trouble moving waste and nutrients
Size
Volume increases faster than surface area of membrane; trouble moving waste and nutrients
Cytokinesis
Division of cytoplasm
Animal cytokinesis
Cell membrane is drawn forward until it's pinched
Plant cytokinesis
Cell plate forms; develop into separating membranes
What protein regulates
Cyclins
Cancer
does not respond to regulatory signals; damage and spreads to other tissues
Stem cells
cells that can transform into any tissue cell; found in embryonic tissue and bone marrow
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