5.2 Factors Affecting Enzyme Activity

Factor: t__

temp

Factor: p__

pH

Factor: Temp
> __ temp: enzyme i__
> substrate moves much __ (speed)
> c__ occur rarely

low, inactivates, slower, collisions

Factor: Temp
> __ temp: as ↑temp = ↑__ of substrate & e__, it moves __& has more c__

optimum, Ek, enzyme, faster, collisions

What is the optimum temp for enzymes in our bodies?

37C

True or False?
Enzymes from diff. organisms have diff. optimum temp

true

Factor: Temp
> __ temp: enzyme d__
> b__ holding enzyme together (__ acids) b__ = enzyme loses s__
> Change in shape = change in shape of a__ __
> Thus can’t b__ to s__ anymore

high, denatures, bonds, amino, breaks, shape, active site, bind, substrate

Are enzymes killed with high temp? Why?

no, they aren’t living

Factor: pH
> if pH isn’t o__ for function, enzymes d__
> enzymes work best at an __ pH

optimised, denature, optimum

Factor: pH
EXAMPLE: t__ (small intestine enzyme)
> breaks down p__ in small intestine
> works best in __ solns
> thus d__ if too __

trypsin, protein, alkaline, denatures, acidic

Factor: pH
EXAMPLE: p__ (stomach enzyme)
> breaks down p__ in stomach
> works best in __ solns
> thus d__ if too __

pepsin, proteins, acidic, denatures, basic