ENZYMES Flashcards
what are enzymes?
enzymes are biological catalysts made of proteins
function of an enzyme
speed up the rate of a chemical reaction
characteristic of catalyst
they aren’t used up in the process
substrates
the chemicals taking part in the reaction that the enzyme catalyses
successful collision is classified as?
a reaction that occurs based on a sufficient amount of kinetic energy being present
was is a cell collision
when a substrate collides with an enzymes active site
describe catalysis
the substrate binds to the active site
this forms the enzyme-substrate complex
this forms a chemical product
the enzyme-substrate complex becomes the enzyme-product complex
product is released
enzyme is ready to repeat the process
two shape types of enzymes
complimentary and non-complimentary
activation energy
the minimum amount of energy needed for a reaction to occur
enzymes effect on activation energy
they LOWER the activation energy required
this means it can occur at a FASTER rate
2 examples of enzyme rate experiments
different temps
different pH
PH stand for?
potential of hydrogen
difference between induced fit and lock and key model
the induced fit model shows the substrate not quite the complimentary shape to the active site
whereas the lock and key show a substrate that is completely complimentary to the enzymes active site
how does the induced fit model work
the enzymes active site changes shape to accommodate the slightly uncomplimentary substrate
negative of induced fit process
the change in the shape of the enzyme can STRAIN THE BONDS
this lowers the activation energy output
