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Enzyme Notes
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Enzyme notes Unite 1 Biology As/A Level
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-Enzymes
Enzymes : A pro tien and a
biological catalyst that lowers the
activation
energy
and speeds up a reaction .
effective in small
quantities reaction
•
will not be in the
•
change
specific reaction
they catalyse
actions ;
very specific in their a
•
°
Structure :
substrate
active
O
Globular pro tien site
is a result of the
shape tertiary structure .
enzyme
tent.is?sPwEetEY.nestsiiistIai.eebinaIsYue-
site .
Induced
o
Fit
Theory :
I . Before the reaction ,
the active site is not
¥0
substrate
complementary to a .
④n
The substrate collides with the
enzyme
2 .
.
::¥¥mm : signs.es#sn.:rmep.::s::hn:
substrate .
-
5 .
This causes bonds in the substrate to bend
the
or stress , leading to reaction .
°
Function :
For to
enzymes work must
they be
-
to substrate
complementary .
"
Rate of Reaction ; The of
Mes sure this
using change a
-
"
reliable over time
amount of reactant .
count ration
-
R - o . R = time °
volume
•
mass
amount of product
R - o .
R =
time
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