Informational
Macromolecules-Informational
macromolecules
include
the
nucleic
acids
and
proteins.
The
nucleic
acids
are
of
two
types.
(i)
Deoxyribonucleic
acid
(DNA),
and
(ii)
Ribonucleic
acid
(RNA).
These
molecules
are
very
large
in
size
and
on
hydrolysis
yield
nucleotides.
Each
nucleotide
consists
of
a
sugar,
phosphate
and
a
nitrogenous
base
which
may
be
a
purine
or
a
pyrimidine
The
sugar
found
in
DNA
is
deoxyribose
while
in
RNA
it
is
ribose.
Both
molecules
contain
adenine
and
guanine
(purines)
and
the
pyrimidine
cytosine.
Generally,
thymine
is
found
only
in
DNA
and
uracil
in
RNA,
although
now
there
is
evidence
to
show
that
a
part
of
thymine
in
DNA
can
be
replaced
by
uracil
without
any
serious
consequences.
Also,
some
of
the
bases
in
DNA
or
RNA
may
be
found
modified
as
for
example.
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