Simple
diffusion
is
the
____________________
of
particles
from
any
area
where
they
are
in
a
____________________
____________________
to
an
area
where
they
are
in
a
____________________
____________________
.
Simple
diffusion
is
a
____________________
process
of
transport
.
This
means
that
in
this
type
of
transport
the
process
of
____________________
does
not
require
the
cell
to
expend
____________________
and
involves
molecules
____________________
down
its
concentration
____________________
.
