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cell biology - unit 1
ka 4 - proteins & enzymes
enzymes
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Created by
lucy steven
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Cards (13)
what reactions can enzymes speed up?
synthesis
and
degradation
reactions.
what is a synthesis reaction?
the
build
up
of
small molecules
into a
large
molecule
what is a degradation reaction?
the
breakdown
of
large
molecules
into
smaller
molecules
HPCOW reaction.
hydrogen peroxide
—catalase—
>
oxygen
+
water
SAM reaction
starch
—amylase—
>
maltose
FLAG reaction
fats
—lipase—
>
fatty
acids
+
glycerol
p
3
^3
3
reaction
protein
—pepsin—
>
peptides
G1PPS reaction
glucose-1-phosphate
—phosphorylase—
>
starch
why are enzymes specific to one substrate?
Active site
complementarity
what happens to a denatured enzyme?
the shape of the
active site
changes and the
substrate
can no longer fit with the enzyme, slowing down the rate of reaction
what are enzymes made of?
Proteins
what is an enzyme?
a
biological
catalyst
when do enzymes work best?
optimum conditions