Topic 1-microscopy, enzymes Flashcards
what is the equation for total magnification
Eyepiece lens x objective lens (magnifcation)
what is the equation for magnification
Image size/real size (divide)
what is a catalyst
speeds up reactions without being changed or used
why do enzymes have special shapes
to catalyse reactions
what is an active site
where an enzyme joins it’s substrate to catalyse a reaction
what happens if a substrate doesn’t fit into the active site
the reaction isn’t catalysed
this is called the lock and key mechanism
what happens to an enzyme if the temp. is too high
bonds break
active site changes shape
what three things affect rate of reaction
temperature, ph and substrate concentration
what happens if the ph is too high or too low in an enzyme
enzyme denatures
how does substrate concentration affect rate of reaction
the higher it is, the faster the reaction
what is the job of amylase
breaks down starch and maltose
