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Cell Growth and Division
The Cell Cycle
• Cell Cycle: The regular pattern of
growth, DNA duplication, and cell
division that occurs in eukaryotic cells.
Cell cycle has 4 main stages :
1.) Gap 1 (G1)
2.) Synthesis (S)
3.) Gap 2 (G2)
4.) Mitosis (M)
The Cell Cycle
Interphase
• Interphase
• Longest part of a cell's life cycle
• Called the "resting stage" because the cell isn't
dividing
• Purpose: cells grow, develop, & carry on all
their normal metabolic functions
• There are 3 parts
• 1.) Gap 1
• 2.) Synthesis
• 3.) Gap 2
1. G1 (1st Growth phase)
•Cells mature & increase in size
•Normal metabolic activities
• Must pass through a checkpoint
before it can go to S phase
Interphase
2.) S (Synthesis Phase)
•DNA is replicated (copied)
Interphase
Interphase
3.) G2 (2nd Growth Phase)
• Additional growth
•Has to pass a checkpoint
•Everything must be in order-adequate cell
size, undamaged DNA- before the cell goes
through mitosis and division.

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Cell Cycle.pptx

  • 1. Cell Growth and Division
  • 2. The Cell Cycle • Cell Cycle: The regular pattern of growth, DNA duplication, and cell division that occurs in eukaryotic cells. Cell cycle has 4 main stages : 1.) Gap 1 (G1) 2.) Synthesis (S) 3.) Gap 2 (G2) 4.) Mitosis (M)
  • 4. Interphase • Interphase • Longest part of a cell's life cycle • Called the "resting stage" because the cell isn't dividing • Purpose: cells grow, develop, & carry on all their normal metabolic functions • There are 3 parts • 1.) Gap 1 • 2.) Synthesis • 3.) Gap 2
  • 5. 1. G1 (1st Growth phase) •Cells mature & increase in size •Normal metabolic activities • Must pass through a checkpoint before it can go to S phase Interphase
  • 6. 2.) S (Synthesis Phase) •DNA is replicated (copied) Interphase
  • 7. Interphase 3.) G2 (2nd Growth Phase) • Additional growth •Has to pass a checkpoint •Everything must be in order-adequate cell size, undamaged DNA- before the cell goes through mitosis and division.