mitosis Flashcards
whats the cell cycle
the series of events that cells go through as they grow and divide
what is interphase
the period of growth that occurs betwen cell division. it has three phases: the g1, S and g2 phase
whats the g1 phase
the period of activity where cells do most of their growing. they increase in size and synthesize new organelles and proteins
whats the S phase
cell chromosomes are replicated and dna molecules are synthesized.
whats the g2 phase
may of the organelles and molecules needed for cell divison are produced during this phase.
what are the phases of mitosis
PMAT: prophase, metaphase, anaphase and telophase
what happens during prophase for mitosis
chromatins condense into chromosomes, centrioles seperate, a spindle forms and the nuclear envelope breaks down
what happens during metaphase
chrosomomes line up across the center of the cell, each connected to a spindle fiber at its centromere
what happens during anaphase
sister chromatids seperate into individual chromosomes and move apart
what happens during telophase
chromosomes gather at opposite ends of the cell and lose their distinct shape, two new nuclear envelope form.
what happens during cytokinesis
cytoplasm pinches in half, each daughter cell has an identical set of duplicate chromosomes