cycle
G1=primary growth, G2=microtubules.
mitosis
pro=before meta=after ana=back telo=tail. Metaphysics after Aristotle's Physics. Metabolism, Metamorphic.
mitosis-anaphase
Human cell has 92 chromosomes.
mitosis-g2
Centrosome: 2 centrioles in animals; plants no centrioles.
cytokinesisA
Microfilaments=actin
cytokinesisP
Vesicles contain cell wall and membrane components.
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ACT 12&C:
non-kinetochore spindles lengthen in anaphase?
two centromeres; kinetochore microtubules?
8eSQ 1=b 2=a 3=1 4=C 5=C? MPF=degradation of cyclin
6=E=cleavage furrow formation? actin= 7=a 8=b
- Platelet-Derived Growth Factor (PDGF) promotes cell division of fibroblasts to heal wounds.
Fibroblasts have receptor tyrosine kinases; to trigger cell division.
- Growth factors are local regulators, not hormone (endocrine glands).
- Cytokinesis:
cleavage furrow pulled in by cytoskeleton, twisted balloon.
- Bacterial
DNA not packaged into chromosomes.
- Human Hapilloma Viruses: cause warts, genital warts, cervical cancer