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AQA GCSE Biology - Enzymes 3

Quiz by Whittle

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20 questions
Show answers
  • Q1
    What are the small sub units that make up a protein?
    Amino Acids
    Glucose
    Triglycerides
    DNA
    30s
  • Q2
    Which of these is not a function of proteins in the body?
    Making enzymes
    Making hormones
    Storing genetic information
    Forming muscle tissue
    30s
  • Q3
    What is the function of enzymes in the body?
    Transport oxygen
    Speed up chemical reactions
    Transmit messages
    Allow diffusion
    30s
  • Q4
    What do we call the molecule that attaches to the enzyme?
    Co-enzyme
    Product
    Substrate
    Reactant
    30s
  • Q5
    Where about on the enzyme does the substrate attach?
    Binding site
    Actual site
    Reaction site
    Active site
    30s
  • Q6
    Which of these statements is not true?
    Enzymes can build up large molecules
    Enzymes can break large molecules down
    Enzymes can change one molecule into another
    Enzymes are used up in the reaction
    30s
  • Q7
    What makes each enzyme specific to one substrate?
    The shape of the enzyme
    The size of the enzymes
    The shape of the active site
    The number of amino acids in the enzyme
    30s
  • Q8
    Why does high temperature slow down an enzyme controlled reaction?
    Enzyme is denatured
    Cells are killed
    Enzyme is killed
    Fewer collisions between enzyme and substrate
    30s
  • Q9
    Which of the following will NOT denature an enzyme?
    High pH
    Low temperature
    High temperature
    Low pH
    30s
  • Q10
    Which organs secrete carbohydrase?
    Salivary glands and pancreas
    Pancreas and stomach
    Salivary gland and stomach
    Stomach and small intestine
    30s
  • Q11
    Where are lipids digested?
    Mouth
    Large intestine
    Stomach
    Small intestine
    30s
  • Q12
    What is the optimum pH of pepsin?
    9
    1
    7
    5
    30s
  • Q13
    Why are conditions acidic in your stomach?
    To breakdown food
    So pepsin can work
    To denature enzymes
    To kill pathogens
    30s
  • Q14
    Where is bile produced?
    Liver
    Small Intestine
    Pancreas
    Stomach
    30s
  • Q15
    Which of these is NOT a function of bile?
    Increase the surface area of fat droplets
    Neutralise acidic pH
    Catalyse the digestion of fats
    Emulsify fats
    30s

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