ENZYMES

Enzymes

• Speeds up biochemical reactions

Activation energy

• For a reaction to happen, energy is needed.
• This energy is called Activation Energy.
• It can either release or absorb energy
• A Catalyst or enzyme works by lowering the activation energy

Functions of enzymes

• Speed up biochemical reactions in the body cells.
• Enzymes are very specific for one chemical reaction

ENZYME SUBSTRATE COMPLEX

• Enzymes provide a site for reactants to react
• The reactants of enzyme- catalyzed reactions are known as Substrates.
• Ex: Glucose + ATP are substrates which bind with the enzyme Hexokinase
• This creates an enzyme substrate complex

OUTCOME OF ENZYME MEDIATED REACTION

• The substrates turn in to products
• The products separate from enzymes
• The freed enzyme starts a new reaction

regulation of enzyme activity

• Work best at certain pH values
• Affected by changes in temperature

Role of enzymes

• making material that cells need.
• Transferring information
• releasing energy
• Catalyst in metabolic pathways