Enzymes

• Enzymes lower the activation energy required for a reaction to occur, increasing the rate of the reaction.
• The active site is where substrates bind to an enzyme.
• Catalysts are substances that increase the rate of chemical reactions without being consumed themselves.
• Enzymes are biological catalysts made up of proteins.
• Enzymes have specific shapes and can only act on certain molecules called substrates.
• Lock-and-key model suggests that enzymes fit perfectly into their substrates like a lock fits into its key.
• Active sites are areas within an enzyme's structure where substrates bind and undergo chemical changes.
• When a substrate fits into its binding site, it forms an enzyme-substrate complex (ES).
• Substrate binding sites on enzymes are complementary in shape to their corresponding substrates.
• Enzymes have specific shapes that allow them to interact with particular molecules called substrates.
• Active sites are regions within enzymes where substrates bind.
• The active site is complementary to the shape of the substrate.
• The active site is the part of an enzyme where the reaction takes place.
• • Ph can effect the rate of reaction of an enzyme as it will effect the shape of the active site
• temperature can effect the rate of reaction of an enzyme as it effect how quickly the enzyme binds to the substrate
• Amylase — starch
• Lipase — lipids
• Protease — protein
• lipids — fatty acids and glycerol
• Protein — amino acids
• Starch — simple sugars
• What organs make amylase ?

  Salivary glands , pancreas and small intestin.
• What organs produce protease ?

  Pancreas , stomach and small intestine.
• What organs make Lipase ?

  Pancreas and small intestine