Cell structure and function - Prokaryotic cells (Bacteria)

Cards (9)

  • What is cell theory?
    Cell theory is a unifying concept stating that cells are a fundamental unit of structure, function and organisation in all living organisms
  • What are prokaryotes?
    Prokaryotes are bacteria cells that are made up of a single cell with no membrane bound organelles
  • Where are prokaryotes found?
    They are found in bacteria and cyanobacteria in the kingdom prokaryote
  • What are the organelles in bacteria cell?
    • Capsule
    • Cell wall
    • 70s ribosomes
    • Plasmids
    • Nucleoid
  • What is a capsule?
    • Polysaccharide layer outside the cell wall
    • Protects cells from drying out, being engulfed by
  • What is a cell wall?
    Made of long chained molecule made up of a sugar and amino acids called peptidoglycan
  • What is 70s ribosomes?
    • Makes proteins
    • 70S (S is a svedburg, a measure of size by rate of sedimentation)
  • What is plasmids?
    • Double - stranded
    • DNA in a circular structure
    • Often contains additional genes that aid the bacterium's survival, such as antibiotic resistance or toxin producing genes
  • What is nucleoid?
    • Region where single circular, length of DNA is folded
    • DNA carries all essential information