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Enzymes

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  • A is _________
    the enzyme's active site. The substrate fits into it.
  • In biochemistry a substrate is _______________.
    the chemical, or reactant, that goes into an enzyme.
  • This chemical is a ____________.
    Monosaccharide (simple sugar)
  • True or False: Lactose is a disaccharide sugar that can be oxidized by an enzyme called Sucrase.
    False! Enzymes are substrate specific. Lactose will not fit into Sucrase. Only Sucrose is oxidized by Sucrase.
  • What is activation energy?
    The minimum amount of energy needed for a chemical reaction to occur.
  • Catabolism is ____________.
    The breaking of chemical bonds to produce smaller molecules from larger ones. (Digestion)
  • In the diagram what is on the right side of the arrow?
    Products or chemicals that are the result of a chemical reaction.
  • What are cofactors and coenzymes? Why are they needed?
    Cofactors and Coenzymes are chemicals, such as Vitamin C, or Iron, that fit into an enzyme and make it work better.
  • True or False: Metabolic reactions will destroy an enzyme. Thus every chemical reaction in your body requires a brand new enzyme.
    False! Enzymes are not "used up" by the chemical reactions they facilitate.
  • If the substrate is sucrose then the chemicals labeled A and B would be _________.
    Fructose and Glucose
  • A _________ is a chemical that can make a chemical reation happen faster or more efficiently.
    catalyst
  • Why do a lot of biological chemicals need enzymes? What takes place inside of an enzyme?
    The inside of an enzyme provides the perfect environment for a chemical reaction to take place because activation energy is lowered.
  • Describe this chemical. Is it a monosaccharide or a disaccharide?
    Sucrose is a disaccharide. It is essentially table sugar. It is considered to be a nutrient.
  • _______________ is a biological catalyst that can __________________________.
    An enzyme is a biological catalyst that can speed up metabolic reactions in organisms.
  • Anabolism is ____________.
    the building of larger molecules by forming chemical bonds.
  • If this chemical reaction requires an enzyme what would another name for reactants be?
    The substrate or substrates.
  • In the diagram what would be on the left side of the arrow?
    Reactants or chemicals about to go through a chemical reaction.
  • Sucrase is __________ that can ___________.
    Sucrase is an enzyme that can catabolize (or break down) sucrose (table sugar).
  • True or False: Sucrose can easily pass through a human cell membrane.
    False
  • What is an enzyme substrate complex?
    The combination of the enzyme and the chemical that goes inside of it.
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