enzymes Flashcards
a constant reaction that is vital to activities of the cell
metabolism
what is atp
adenosine triphosphate
what are enzymes
proteins that speed up chemical reactions without altering itself in the process
what do enzymes end in
ase
how do enzymes work what are the two theories
lock and key model and induced fit
what is the lock and key model
substrates are attracted to the enzymes due to their exact fit
what is the induced fit theories
the enzymes active site and substrates don’t fit so they both alter their shape
what is a coenzyme
non protein molecule required by an enzyme
what factors can affect enzyme activity
concentration, temp, inhibitors , pH
what is a cofactor
a mineral usually metal ion that forms part of the active site
what is a apoenzyme
where cofactors and coenzymes attach, responsible for speeding up
what is a holoenzyme
cofactor and coenzyme and apoenzyme
what is a competitive inhibitor
looks like a substrate, competes and binds to active site on enzyme
what is a non competitive inhibitor
doesn’t look like a substrate, doesn’t bind to active site and changes shape
how does ph affect enzyme
no specific ph that works for enzymes, any other ph will cause denaturation
