5.2 Flashcards
what are the two major components that make up a reaction
reactants –> products
what happens when a chemical reaction occurs
energy is either released or absorbed
what does exothermic mean
when energy is released from the molecules
what does endothermic mean
when energy is absorbed into the molecules
chemical reactions speed up by
lowering the activation energy
what is an active site
area of an enzyme where reactants bind to enzyme
what is the lock and key theory
only reactants/substrates can fit
enzymes are specific to the reaction that they catalyze and are based on what
the shape of the reactant and active site
enzymes can be reused after what
catalyzing a reaction and are not changed by the reaction
what are enzymes named after (-ase, in)
the substrate/chemical reaction after its calayzed
enzymes can help create a big molecule or
break down a big molecule
substrates can only activate an enzyme once they
bind to the enzymes activation site
what is activation energy
the amount of energy needed to start the reaction
catalyst
a substance in general that makes something go faster
enzyme
a catalyst that speeds up a reaction by lowering the activation energy
hump of curve
activation energy
if end of line is lower than start
exothermic
if end of line is higher than start
endothermic
what are the 3 things enzymes do
speed up reactions, lower activation energy, only works because of their unique shape
enzymes can be affected by changes in
pH and temperature
if the change is great enough
the enzyme can be destroyed
denature/denaturing
the process of an enzyme/protein being destroyed, often
because the shape of the enzyme is changed because of a drastic change in temperature
