Cell cycle notes by HC121106023357

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									How do little elephants grow up to be BIG
                 elephants?
                   Agenda
• Warm up – How do
  little elephants grow
  up to be BIG
  elephants?
• Check bookwork HW
• Cell cycle slides
• Cancer slides
• Cell cycle worksheet
  (goes in notebook)
                             Interphase
•   Interphase:
     – most of the cells "life“
•   Parts of Interphase:
     – G1phase:
     – spends most of its functional life
     – performing their assigned tasks,
        metabolizing, synthesizing etc.
     – something triggers the cell to
        begin a cell division event
•   Stimuli to start a cell division:
     – To replace dead or dying cells,
     – To produce more cells to
        enlarge the organism (growth
        and development)
     – Reproduction, i.e. to increase
        the number of unicellular
        organisms.
S - Phase
• = synthesis phase.
• DNA molecules are
  copied or replicated,
          Gap 2 or G2 Phase

• The cell is preparing for the actual division
  events (lots of protein synthesis).
  – tubulin synthesized (protein that makes up
    microtubules)
  – used to manufacture the spindle apparatus
• G2 completes interphase now the cell is
  prepared for mitosis.

								
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