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23 Cards in this Set
- Front
- Back
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cell cycle and its stages
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set of repeating stages over the life, growth, and division of eukaryotic cells
Stage 1. interphase Stage 2. M (mitotic) stage |
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interphase and its stages
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cell stage during which growth and DNA replication occurs, no division
Stage 1. G1 Growth Stage 2. S DNA synthesis Stage 3. G2 Growth and prep for division |
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chromatid
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a sing double helix of DNA
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Mitotic stage and its phases
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final stage of cell cycle
1. Mitosis 2. Cytokenesis |
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Mitosis
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process in which a parent nuclei is divided into two, identical daughter nuclei
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5 Phases of Mitosis
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Prophase
Prometaphase Metaphase Anaphase Telophase |
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cytokinesis
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division of the cytoplasm after mito and mieosis
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signal
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molecule that stimulates or inhibits a metabolic event
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Signal checkpoint locations
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1. G1 cell cycle checkpoint, whether or not to allow chromosomal replication
2. G2 begin mitosis checkpoint 3. M spindle assembly checkpoint during metaphase |
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caspases
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enzyme that bring about apoptosis
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chromatin
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thing mass of DNA threads
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diploid (2n) number
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the complete number of chromosomes
46 in humans |
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haploid (n) number
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half the diploid number; created during meiosis as gametes, will fuse with another haploid cell during fertilization to create a complete diploid cell
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sister chromatids
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two genetically identical chromatids that make up a chromosome
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centromere
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central constriction where sister chromatids are bound together
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kinetochore
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protein complex that develop on each side of the centromere during cell division
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prophase events
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chromatin condenses into visible chromosomes
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prometaphase events
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nuclear membrane disintegrates, spindles attach at centromeres
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metaphase events
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centromeres are aligned along the metaphase plate
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anaphase events
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spindle begins at the centromere pulling apart sister chromatids toward each pole, creating daughter chromosomes
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telophase events
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daughter chromosomes are now located at each pole, the spindles have disappeared, the nuclear envelopes reappear, and a cleavage furrow has formed
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nucleoid
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region of prokaryotic cell where DNA is located
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binary fission
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splitting of parent cell into two daughter cells
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