Nature and variety of living organsims

• Common features in bacteria 


  -Circular chromosomes of DNA

  -Cell wall, cell membrane, cytoplasm and plasmid

  -Single-celled
• 8 characteristics of life (MRS C GREN)


  Movement

  Reproduction

  Sensitivity

  Control

  Growth

  Respiration

  Excretion

  Nutrition
• characteristics of a virus 


  They are small - not living organisms

  They can only reproduce inside living cells

  They have a protein coat around some genetic material
• what is a pathogen 


  a disease causing organism such as bacteria, viruses, protists and fungi
• Five kingdoms


  Animal

  Plant

  Fungi

  Protist

  Monera
• Examples of bacterial, fungal, protists and viral pathogens 


  B-salmonella

  F-athletes foot

  P-malaria

  V-HIV