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b2 (multicellular organism, health), digestive system, cells - The…

- - - - a group of organs come together to do a specific job and form an organ system
        
        a group of tissues come together for a specific function to form an organ
        
        a group of specialised cells come together to form a specific function are called a tissue
        
        tissue
        
        muscular
        
        glandular
        
        epithelial
        
        organ
        
        Liver
        
        heart
        
        lung
        
        organ system
        
        circulatory system
        
        Circulatory system
        
        purpose of the circulatory system is to pump blood around the body
        
        blood contain
        
        4 more items...
        
        heart
        
        4 chambers in the heart
        
        4 more items...
        
        blood vessels
        
        arteries
        
        1 more item...
        
        veins
        
        1 more item...
        
        capillaries
        
        1 more item...
        
        respiratory system
        
        Respiratory system
        
        digestive system
      - organism
        
        human
        
        plant
        
        fungi
- - - - Communicable diseases are transferred between individuals. They are normally caused by micro-organisms
        
        fungus
        
        athletes foot
        
        black rose spots
        
        protists
        
        malaria
        
        bacteria
        
        salmonella
        
        gonorrhoea
        
        viruses
        
        measles
        
        symptom
        
        red rash
        
        fever
        
        it is spread by inhaling droplets from sneezes or coughs
        
        it can be fatal and lead to meningitis or pneumonia
        
        HIV
        
        symptons
        
        it is spread by sexual contact or exchange of bodily fluids such as blood
        
        TMV
        
        symptoms
    - - non-communicable diseases cannot be transferred between individuals and could be caused by a number of different factors,
        
        cancer
- - - - villi
- - - - protease will not work in the liver
      - but create the optimum pH for lipase
- - - - made of proteins
      - biological catalysts
      - The surface of the substance that is going to bind with the substrate is called the activation site
        
        if the enzyme is at the wrong pH or temperature the protein bonds break and the active site loses its shape and the enzyme becomes denatured and can no longer wok.
        
        Lipase works best at pH 8
        Amylase work best at pH 7 Protease works best at pH 2
        
        This why there is hydrochloric acid in the stomach. So that the protase enzymes can work properly
        
        pH in the mouth is pH 7 so amylase can work properly
        
        the pH is the small intestine is pH 8 by the bile produced in the liver
        
        enzyme substrate complex is when the enzyme and the substrate bind together. The theory of this is called the lock and key model
        
        Product is when the substrate is broken down by the enzyme
      - enzymes change the rate of chemical reactions and can break large molecules into smaller molecules or vise versa
      - amylase
        
        break down starch into glucose
      - protease
        
        breaks down protein into amino acids
      - lipase
        
        breaks down lipids/fats into fatty acids and gylcerol
      - carbohydrase
        
        breaks down carbohydrates into sugar
      - enzymes work best at the temp of 37 and specific enzymes work better at a certain pH. This is called the optimum pH or optimum temperature