enzymes Flashcards
1
Q
what are enzymes
A
they act as biological catalysts that increase the speed of a reaction without being changed or used up
2
Q
what are enzymes made up of
A
enzymes are large proteins made up of chains of amino acids
3
Q
the substrate has to…
A
fit into its active site. if the substrate doesn’t fit the active site, the reaction won’t be catalysed
4
Q
the active site…
A
changes shape as the substrate binds to it to get a tighter fit
5
Q
changes in temp…
A
changes the rate of an enzyme-catalysed reaction
6
Q
the higher the temperature…
A
the higher the rate
7
Q
too much heat…
A
changes the shape of the active site so the enzyme becomes denatured
8
Q
if pH too high or too low…
A
the pH interferes with the bonds holding the enzymes together
