OSMOSIS
Two
beakers
____________________
____________________
(
filled
)
with
water
.
In
each
beaker
a
glass
cylinder
____________________
____________________
(
immerse
)
across
the
bottom
of
which
a
membrane
____________________
____________________
(
tie
)
.
The
membrane
____________________
(
allow
)
water
to
pass
through
it
freely
,
but
it
would
not
allow
molecules
of
dissolved
protein
to
pass
through
it
,
since
protein
molecules
____________________
(
be
)
larger
than
molecules
of
water
.
A
membrane
which
____________________
(
allow
)
molecules
to
pass
through
it
____________________
____________________
(
known
)
as
a
permeable
membrane
.
However
since
the
membranes
used
in
this
experiment
____________________
(
allow
)
only
molecules
of
the
solvent
to
pass
through
,
they
____________________
____________________
____________________
(
be
known
as
)
semi
-
permeable
membranes
.
Two
protein
solutions
____________________
then
____________________
____________________
(
make
up
)
,
one
at
a
concentration
of
5
g
/
dm3
and
the
other
at
10
g
/
dm3
.
Some
of
the
5
g
/
dm3
solution
____________________
____________________
(
pour
)
into
one
of
the
glass
cylinders
and
some
of
the
10
g
/
dm3
solution
into
the
other
cylinder
.
The
levels
of
the
water
in
the
beakers
and
the
protein
solutions
in
the
glass
cylinders
____________________
____________________
(
adjust
)
until
they
____________________
(
be
)
all
equal
.
The
experiment
____________________
then
____________________
(
leave
)
for
period
of
twenty
-
four
hours
.
After
twenty
-
four
hours
it
____________________
____________________
(
observe
)
that
the
levels
of
the
water
and
protein
solutions
____________________
(
be
)
considerably
different
from
when
the
experiment
____________________
____________________
(
begin
)
.
The
level
of
liquid
in
the
cylinders
____________________
____________________
(
see
)
to
be
higher
than
the
level
of
the
water
in
the
beakers
.
Moreover
,
when
the
height
of
the
column
of
liquid
in
each
cylinder
____________________
____________________
(
measure
)
,
it
____________________
found
that
the
height
of
the
column
of
liquid
in
the
cylinder
containing
the
more
concentrated
solution
____________________
(
be
)
twice
the
height
of
the
other
solution
.
