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Biology (Forensic science (Human blood (Blood types (A, B, AB, O), Solving…

- - - - Through electrolysis the "small" bits of the DNA go further down the gel the the 'big' ones, this give the sample a distinctive pattern
  - - - Everyone's dental impression is unique, so if a dental impression of a suspect is at the crime scene then they must have been there
  - - - Cotton
        
        Made from the cotton plant, used from 800 AD onwards
        
        Made of cellulose
      - Wool
        
        Made from fur of wooly animals
        
        Made of proteins
        
        Used since paleolithic times
      - Silk
        
        Made from the fibres silk worms weave their cocoons out of
        
        Expensive, used 3000 BC onwards
        
        Made of proteins
    - - place a fibre on a glass slide with forceps
        
        Add a drop of water
        
        Lower coverslip onto slide without air bubbles forming
  - - - A
      - B
      - AB
      - O
    - - Finding a suspects blood at the scene might indicate that they were there.
      - If you find the victim's blood on a suspect it might mean they could have been in contact with the victim
    - - It will make antibodies to attack the blood cells and might make you fatally sick
      - If the blood cells dont match then the body might mistake it for pathogens.
- - - - Have a protein coat and a strand of DNA
      - Reproduce by forcing host cells to construct copies of themselves
    - - Made of chitin, have hyphae and sporangia with spores.
      - Disperse spores.
    - - BActeria have a chromosome of DNA, cytoplasm, and a cell wall
      - Reproduce through Binary fission
  - - - Preservation
        
        Removing, water or air
        
        Drying
        
        Canning
        
        Killing the pathogens through un-inhabitable processes
        
        Boiling
        
        Pickling
    - - Fungi
        
        Muushrooms
        
        Yeast
        
        Decomposer
        
        Bacteria
        
        Making yogurt, cheese
        
        Decomposing waste materials
        
        Viruses
        
        Vaccines, bacterio phages
    - - Non-living transmitter of diseases. E.g a water dropler
      - A vector is a living transmitter of diseases
  - - - Phagocytes engulf the pathogens and digest them
    - - Lymphocytes produce antibodies that weaken the pathogens
- - - - Independent, thing changed
      - Control, thing thing that stayed the same
      - Dependent, the thing measured
    - - Thing measured goes up
      - Thing changed goes left to right