enzymes Flashcards
2 models for enzyme theory
lock and key
induced fit ( modern idea)
what determines an enzymes shape
the globular tertiary structure of the protein
process of enzyme action
substrate and active site complementary
they bind to form an enzyme-substrate complex
products are released
role of an enzyme
biological catalyst
factors affecting enzyme activity
concentration (substrate/enzyme)
temperature
pH
what happens when an enzyme denatures
the tertiary structures changes the 3D shape
this means the active site shape is changed so is no longer complementary
no enzyme-substrate complex can form
no reaction can be catalysed
effect of temperature enzymes
more kinetic energy, increased force of collision so increased enzyme activity
until denaturation
effect of pH on enzymes
H+ ions disrupt hydrogen and ionic bonds in a molecule which results in denaturation