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National 5 Biology 1.4 Proteins

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  • Enzymes are composed of …………….
    Carbohydrate
    Fat
    Protein
    Starch
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  • What forms to facilitate an enzyme reaction?
    A biological catalyst
    An active site
    An enzyme-substrate complex
    A protein
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  • Name the type of breakdown reactions that enzymes are involved in and describe these reactions.
    Synthesis. Small molecules are built up into large molecules.
    Degradation. A large molecule is broken down into smaller molecules.
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  • Proteins are made from chains of …………….
    Ribosomes
    mRNA
    Amino Acids
    DNA
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  • What are the 5 functions of proteins?
    structural, enzymes, hormones, antibodies and receptors
    diffusion, enzymes, hormones, antibodies and receptors
    osmosis, genes, hormones, antibodies and receptors
    structural, enzymes, hormones, antibodies and osmosis
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  • Enzymes bind to a ...………...….
    Non-Specific Product
    Specific Substrate
    Non-Specific Substrate
    Specific Product
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  • What name is given to the site where the enzyme and substrate bind?
    Active Site
    Product Site
    Catalyst Site
    Enzyme Site
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  • Breaking down a large molecule into smaller molecules is an example of a …………….
    Degradation Reaction
    Synthesis Reaction
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  • Building up smaller molecules into a larger molecule is an example of a …………………...
    Synthesis Reaction
    Degradation Reaction
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  • Name the type of build-up reactions that enzymes are involved in and describe these reactions.
    Synthesis. Small molecules are built up into large molecules.
    Degradation. A large molecule is broken down into smaller molecules.
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  • What does the enzyme amylase break down starch into?
    Maltose
    Glucose
    Peptides
    Glycerol
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  • Which enzyme is specific to Hydrogen Peroxide?
    Amylase
    Catalase
    Pepsin
    Phosphorylase
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  • What is the name given to the conditions that an enzyme is most active at?
    Degradation
    Denatured
    Specific
    Optimum
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  • What happens to an enzyme once its temperature or pH goes beyond the optimum level?
    It denatures and enzyme activity increases
    It denatures and enzyme activity decreases
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  • Which enzyme is used to build up Glucose-1-Phosphate into Starch?
    Catalase
    Amylase
    Phosphorylase
    Pepsin
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  • What type of enzyme reaction is shown in the diagram?
    Synthesis
    Degradation
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