Noun
Molecules
,
such
as
amino acids
,
sugars
,
nucleic acids
,
proteins
,
polysaccharides
,
DNA
,
and
RNA
,
that
occur
naturally
in
living
organisms
;
any
such
molecule
,
even
if
created
outside
a
living
thing
(
as
for
example
in
a
test tube
or
bioreactor
).