BIOLOGY

• Life cycle


  Series of developmental steps an individual goes through from birth to reproduction
• Cell cycle


  Life cycle of a cell
• Cell cycle


  1. Cell growth

  2. DNA replication

  3. Cell division
• Interphase


  Cell grows and prepares for cell division
• Stages of interphase


  • G1
  • S
  • G2
• G1 phase


  Cell accumulates building blocks and energy for DNA replication
• S phase


  DNA replication occurs, centrosome is duplicated
• G2 phase


  Cell replenishes energy, synthesizes proteins, organelles are duplicated
• Mitosis


  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• Caterpillar turns into a butterfly
• Life cycle


  Series of developmental steps an individual goes through from birth to reproduction
• Cell cycle


  Life cycle of a cell
• Cell cycle


  1. Cell growth

  2. DNA replication

  3. Cell division
• Interphase


  Cell grows and prepares for cell division
• Stages of interphase


  • G1
  • S
  • G2
• G1 phase


  Cell accumulates building blocks and energy for DNA replication
• S phase


  DNA replication occurs, centrosome is duplicated
• G2 phase


  Cell replenishes energy, synthesizes proteins, organelles are duplicated
• Mitosis


  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• Cytokinesis


  Physical separation of cytoplasm into two daughter cells
• Daughter cells may immediately undergo another round of cell division or enter a resting G0 phase
• Different cell types have different cell cycle durations