Unit 3- Biology

• Both living and non-living things are made of chemicals and are controlled by the laws of chemistry and physics
• Living and non-living things are organized differently
• Hierarchy of organization for living things


  Extends from atoms to the biosphere
• The cell is the basic building block of life
• Improved microscopes and slide preparation techniques have made the detailed study of living things possible
• Scientists studied living tissues and organized their observation to form The Cell Theory
• Cell Theory


  • The cell is the smallest unit of life
  • All living things are made of one or more cells
  • All new cells come from preexisting cells
• Cell types


  • Prokaryotic cells (bacteria)
  • Eukaryotic cells (plant)
  • Eukaryotic cells (Animal)
• Organelles


  Tiny organs each serving their own function and purpose
• Plant cell organelles


  • Cell membrane
  • Cytoplasm
  • Mitochondrion
  • Ribosomes
  • Endoplasmic reticulum
  • Vesicle
  • Golgi body/apparatus
  • Nucleus
  • Nucleolus
  • Vacuole
  • Cytoskeleton
  • Cell wall
  • Chloroplasts
• Animal cell organelles


  • Cell membrane
  • Cytoplasm
  • Mitochondria
  • Ribosomes
  • Endoplasmic reticulum
  • Vesicle
  • Golgi bodies
  • Nucleus
  • Nucleolus
  • Vacuole
  • Lysosomes