BIOL 212 EXAM 2 EXAM PREP 2026 Q AND
A COMPLETE REVIEW WITH ACCURATE
ANSWERS
◉ Water potential in plants consists mainly of ________.
a.
solute potential and membrane potential
b.
pressure potential and solute potential
c.
pressure potential and membrane potential
d.
solute potential and osmotic potential
e.
solute potential only
Answer: b.
pressure potential and solute potential
◉ Compared to a cell with few aquaporins in its membrane, a cell
containing many aquaporins will ________.
a.
,have a higher water potential
b.
have a lower water potential
c.
be flaccid
d.
have a faster rate of active transport
e.
have a faster rate of osmosis
Answer: e.
have a faster rate of osmosis
◉ Why does water move into a root?
A.
Roots accumulate ions from the soil, raising water potential.
B.
Roots accumulate ions from the soil, lowering water potential.
C.
Solute concentration is always higher in the soil than in roots driving
water out of the soil and into the roots.
D.
Roots are like sponges and soak up fluids.
,Answer: B.
Roots accumulate ions from the soil, lowering water potential.
◉ Which of the following correctly matches a component of the
cytoskeleton to one of its functions?
a.
Microfilaments cause ciliary bending.
b.
Microtubules help animal cells divide in two.
c.
Microfilaments form the nuclear lamina.
d.
Intermediate filaments contribute to cytoplasmic streaming.
e.
Microtubules move chromosomes.
Answer: e.
Microtubules move chromosomes.
◉ Phloem transport of sucrose is often described as going from
source to sink. Which of the following is most likely to function as a
source?
a.
, a bulb in early spring
b.
a shoot tip in late fall
c.
a growing leaf in early spring
d.
a growing root in late summer
Answer: a.
a bulb in early spring
◉ Researchers tried to explain how vesicular transport occurs in
cells by attempting to assemble the transport components. They set
up microtubular tracks along which vesicles could be transported,
and they added vesicles and ATP (because they knew the transport
process requires energy). Yet, when they put everything together,
there was no movement or transport of vesicles. What were they
missing?
a.
contractile microfilaments
b.
motor proteins
c.
an axon
A COMPLETE REVIEW WITH ACCURATE
ANSWERS
◉ Water potential in plants consists mainly of ________.
a.
solute potential and membrane potential
b.
pressure potential and solute potential
c.
pressure potential and membrane potential
d.
solute potential and osmotic potential
e.
solute potential only
Answer: b.
pressure potential and solute potential
◉ Compared to a cell with few aquaporins in its membrane, a cell
containing many aquaporins will ________.
a.
,have a higher water potential
b.
have a lower water potential
c.
be flaccid
d.
have a faster rate of active transport
e.
have a faster rate of osmosis
Answer: e.
have a faster rate of osmosis
◉ Why does water move into a root?
A.
Roots accumulate ions from the soil, raising water potential.
B.
Roots accumulate ions from the soil, lowering water potential.
C.
Solute concentration is always higher in the soil than in roots driving
water out of the soil and into the roots.
D.
Roots are like sponges and soak up fluids.
,Answer: B.
Roots accumulate ions from the soil, lowering water potential.
◉ Which of the following correctly matches a component of the
cytoskeleton to one of its functions?
a.
Microfilaments cause ciliary bending.
b.
Microtubules help animal cells divide in two.
c.
Microfilaments form the nuclear lamina.
d.
Intermediate filaments contribute to cytoplasmic streaming.
e.
Microtubules move chromosomes.
Answer: e.
Microtubules move chromosomes.
◉ Phloem transport of sucrose is often described as going from
source to sink. Which of the following is most likely to function as a
source?
a.
, a bulb in early spring
b.
a shoot tip in late fall
c.
a growing leaf in early spring
d.
a growing root in late summer
Answer: a.
a bulb in early spring
◉ Researchers tried to explain how vesicular transport occurs in
cells by attempting to assemble the transport components. They set
up microtubular tracks along which vesicles could be transported,
and they added vesicles and ATP (because they knew the transport
process requires energy). Yet, when they put everything together,
there was no movement or transport of vesicles. What were they
missing?
a.
contractile microfilaments
b.
motor proteins
c.
an axon
