3: The Cell

• Cell


  The basic structural and functional unit of life.
• Discovery of Cell

  • In 1665
  • Robert Hooke discovered cell
  • by examining a thin slice of cork under compound microscope
  • observing cells as empty chambers with thick outer covering
• Organelles within animal cell

  • Cell/plasma membrane
  • Cytoplasm
  • Nucleus
  • Mitochondria
  • Endoplasmic reticulum
  • Golgi apparatus
  • Ribosomes
  • Lysosomes
  • Centrosomes
  • Vacuole
• Organelles within plant cell

  • Cell wall
  • Cell membrane (cellulose)
  • Cytoplasm
  • Nucleus
  • Mitochondria
  • Endoplasmic reticulum
  • Golgi bodies & vesicles
  • Ribosomes
  • Lysosomes
  • Centrosomes
  • Chloroplast (chlorophyll)
  • Vacuole
• Discovery of organelles

  • In 1831, cell Nucleus discovered
  • Later many other endoplasmic organelles discovered
• Organelles within Nucleus

  • Nuclear membrane
  • Nuclear pores
  • Double/Nuclear envelope
  • Nucleoplasm
  • DNA
  • Nucleolus