Cells

• Cells


  The basic unit of all living organisms
• Organisms


  • Can be Prokaryotes or Eukaryotes
• Parts of a cell


  • Cell membrane
  • Cytoplasm
  • Nucleus
  • Mitochondria
  • Ribosomes
• Genetic material


  DNA that carries the instructions for the cell
• Cytoplasm


  Gel-like substance between the cell membrane and the nucleus where most of the chemical reactions happen
• Nucleus


  Contains DNA and controls the activities of the cell
• Mitochondria


  Where most of the aerobic reactions for respiration take place, providing the cell with energy
• Ribosomes


  Where proteins are made in the cell
• Plant cells


  • Have a cell wall made of cellulose, a large permaent vacuole, and chloroplasts for photosynthesis
• Bacterial cells


  • Are much smaller, have no nucleus, and have a cell wall and plasmids
• Bacterial cells do not have a true nucleus, instead they have a single circular strand of DNA that floats freely in the cytoplasm