Summary Unit 3: Enzymes Notes

3.
Enzymes
3- 1 Mode
of action of enzymes
1. Stare that that
secreted to
enzymes are
globular proteins catalyse
reactions inside cells or are


outside
catalyse reactions cells



2. the mode action of
Explainactivation of enzymes of
in terms sive
enzyme substrate
an amine
-




, complex
lowering of key hypothesis
and
enzyme specificity including
the and lock
energy ,

and the induced
fir hypothesis .




hwirgicou cwmhpv
→

4 speeds up the mine of metabolic
the ouniutuin
by hovering
reunions
MY
g) temp energy
needed
for the reunion to occur

bruits form ↳ ur used up itself
between
enzyme
and substrate → soluble
↳ hydrophilic R
group
-




→
Lock and
key Hypothesis
→ substrate has
complementary fit to
enzyme
the
problem :




→
suggests there
is no
flexibility /moulding cnioued
Inclined Fit
Hypothesis
→
enzyme
moulds to
shape of substrate
↳ for example

→ sucrose attunes to active site
of enzyme
→ enzyme squeezes ] ↳ohhhh
sucrose

bonus
↳ breaks glycosidic
the
tauria lion
→ product released
from enzyme due to change ↳ t energy
of shape