Me + abolism all the reactions of the
body
-
4
reaction in > metabolic
sequences -
pathways
·
Anabolic reactions
G controlled
by
-building up molecules enzymes
e
g
. protein synthes is
-
.
·
catabolic reactions
-breaking molecules down
e . digestion
-
9
.
Product of one enzyme-controlled reaction
↳ becomes reactant
, (a + alyst
·
molecule which speeds
up a chemical
reaction but
, remains
unchanged at the
end of reaction
Enzymes proteins
·
globular
lowers
·
activation
energy
·
ca + alys + )
4
biological becot made of living cells
General properties
-
speed up reactions
of -not used
enzymes up
-not changed
-
high turn-over number
↳
Catalyse many reactions per second
enzyme " :
·
proteins with
tertiary structure
Protein folds spherical or
globular
·
chain in
shape with hydrophilic R groups on
S
- -
Outside of Molecule soluble
determines
bondS
each enzyme has sequence of
particular
a mino a cids
·
hydrogen bond -
small area with specific
·
disulphide bridges 3D shape
- active site
·
ionic bond
, what enzymes
·
catalyse reactions
do ? ·
speed up reaction rate
digestive
·
and metabolic reactions
where do you
·
Digestive system
find enzymes ? 4 intestine and Saliva
all tissues and
living
·
cells organs
,
· Intracellular and extracellular
Digestive
·
and Metabolic
What are a mino acids
enzymes .
made
up ? globular protein
·