Enzymes

HideShow resource information
View mindmap
  • Enzymes
    • Enzymes are protein molecules known as biologial catalysts.
      • They increase the rates of reactions so that chemical reactions in living organisms can take place at normal temperatures. Enzymes lower the activation energy of a reaction so that less energy is needed to turn substrate molecules into the product.
    • The molecules that enzymes act upon are called substrate molecules. The molecule produced as a result of the enzyme action on the substrate is called the product.
      • The substrate fits to a part of the enzyme called the active site. The specific tertiary structure of the active site means that only substrate molecules with a complementary shape can fit into it.
    • Lock and key mechanism
      • Only substrate molecules with a complementary shape can fit into the active site. If a molecule does not have a shape complementary to the active site then it cannot bind to form an enzyme substrate complex.
  • Enzymes are protein molecules known as biologial catalysts.
    • They increase the rates of reactions so that chemical reactions in living organisms can take place at normal temperatures. Enzymes lower the activation energy of a reaction so that less energy is needed to turn substrate molecules into the product.
  • Factors that affect the rate of Enzyme Reactions.
    • Enzymes
      • The molecules that enzymes act upon are called substrate molecules. The molecule produced as a result of the enzyme action on the substrate is called the product.
        • The substrate fits to a part of the enzyme called the active site. The specific tertiary structure of the active site means that only substrate molecules with a complementary shape can fit into it.
      • Lock and key mechanism
        • Only substrate molecules with a complementary shape can fit into the active site. If a molecule does not have a shape complementary to the active site then it cannot bind to form an enzyme substrate complex.
    • Temperature, pH, Substrate concentration, Enzyme concentration, Inhibitors.
      • Useful words: Optimum, Denature, Kinetic energy, Colliding, Enzyme substrate complexes, Break weak hydrogen bonds, No longer bind, Limiting factor, Plateaus, Correlation.

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules, organic chemistry and biochemistry resources »