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  • What Happens In Cells?
    • DNA
      • Found in the nucleus of eukaryotic cells.
      • Floats freely in long strands in prokaryotes.
      • Chromosomes are long molecules of DNA. Most people have 46 of them.
        • Half of your chromosomes are inherited from mommy, the other half from daddy.
      • DNA is split into sections called genes.
        • Codes genes carry determine which proteins will be made.
      • DNA consists of two strands, which are joined together by bases.
        • Strands are then twisted together. This forms a double helix.
      • DNA is a polymer.
      • Base Pairings:
        • Gemma Collins
        • Tall Apple
        • A = Adenine
        • T= Thymine
        • C = Cytosine
        • G= Guanine
      • Nucleotides are made up of deoxyribose, a phosphate and a base.
    • Enzymes
      • Enzymes are made up of proteins.
      • They are biological catalysts.
      • In the body they build larger molecules from smaller ones such as through protein synthesis.
        • Break down larger molecules into smaller ones, through digestion.
      • Made up of long chains of amino acids.
      • Shape is important, molecule and other substances bind to the enzyme.
        • This is called the active site.
      • Lock and Key Hypothesis
        • One key will fit the lock and be able to open the door.
    • Enzyme Reactions
      • Temperature
        • Higher temperature means enzyme and substrates molecules react more quicker.
        • If the temperature become to high, enzymes become de natured.
      • pH
        • Each enzyme has a optimum pH.
        • The wrong pH means enzymes are natured.
      • Concentration
        • The higher the concentration of an enzyme, the more they collide.


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