Active
Transport
Accumulation
of
a
solute
against
its
electrochemical
potential
through
an
energy
linked
process
is
called
active
transport.
Active
transport
systems
differ
from
facilitated
diffusion
systems
in
that
they
consist
of
at
least
two
components.
One
of
them
is
a
solute
specific
carrier
which
acts
in
a
catalytic
manner,
as
in
facilitated
diffusion.
The
other
is
continuous
supply
of
metabolic
energy.
A
carrier
coupled
to
source
of
metabolic
energy
can
transport
solutes
against
a
concentration
or
electro
chemical
gradient.
Active
transport
can
maintain
a
concentration
of
an
ion
or
a
molecule
several
times
higher
on
one
side
of
the
membrane
than
the
other
Index >> Membrane Transport >> Active Transport
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