the cell cycle and mitosis Flashcards
what is the cell cycle made of?
interphase, mitosis, cytokinesis
what percent is the interphase of the cell cycle?
90%
what is interphase made of?
G1, S, G2
what happens in G1?
growth and duplicating of cell organelles
what happens in synthesis?
duplication of DNA
what happens in G2?
growth and prepare for mitosis
what is mitosis?
a process where a cell divides into diploid two genetically identical daughter cells
what do humans use mitosis for?
growth and repair
what are the phases of mitosis?
*PMAT
prophase
metaphase
anaphase
telophase
what is prophase?
nuclear membrane disappears (dashed line) and chromatin condenses into chromosomes
what is metaphase?
chromosomes line up in the middle of the cell, chromosomes attach to the spindle fibers (created by the centrioles)
what is anaphase?
sister chromatids move away from each other and to opposite poles
what is telophase?
nuclear membrane reforms and chromosomes unfold back into chromatin
what is cytokinesis?
cytoplasm is split and 2 new cells form.
cancer is caused from what?
uncontrolled mitosis cell division
what are sister chromotids?
one half of a duplicated chromosomes
what holds the chromatids together?
centromere
what is chromatin?
unwinded DNA (spaghetti like)
