BIOD 121 MODULE 2 EXAM SUMMER 2026
STUDY GUIDE COMPLETE QUESTIONS AND
ANSWERS 100% CORRECT
◉ transport proteins... down. Answer: Facilitated diffusion across a
biological membrane requires ________ and moves a substance ________
its concentration gradient.
transport proteins... against
energy and transport proteins... against
energy... down
transport proteins... down
◉ exhibit a net movement to the side with lower water
concentration. Answer: When two solutions that differ in solute
concentration are placed on either side of a selectively permeable
membrane, and osmosis is allowed to take place, the water will
________.
exhibit a net movement to the side with lower solute concentration
exhibit an equal movement in both directions across the membrane
exhibit a net movement to the side with higher water concentration
exhibit a net movement to the side with lower water concentration
,◉ is hypotonic to the protozoan. Answer: Some protozoans have
special organelles called contractile vacuoles that continually
eliminate excess water from the cell. The presence of these
organelles tells you that the environment ________.
is hypotonic to the protozoan
contains a higher concentration of solutes than the protozoan
is isotonic to the protozoan
is hypertonic to the protozoan
◉ become turgid. Answer: In a hypotonic solution, a plant cell will
________.
become turgid
burst
become flaccid
undergo plasmolysis
◉ Active transport. Answer: Which of the following processes could
result in the net movement of a substance into a cell, if the substance
is more concentrated in the cell than in the surroundings?
,diffusion
active transport
osmosis
facilitated diffusion
◉ phagocytosis. Answer: The act of a white blood cell engulfing a
bacterium is ________.
osmosis
phagocytosis
exocytosis
diffusion
◉ expand. Answer: Examine the cells below. Cells with a higher
concentration of ions than the surrounding medium tend to ________.
divide
expand
stay about the same size and shape
shrink
, ◉ the diffusion of water across a selectively permeable membrane.
Answer: Osmosis can be defined as ________.
the diffusion of water across a selectively permeable membrane
active transport across a selectively permeable membrane
the diffusion of a solute across a selectively permeable membrane
the diffusion of nonpolar molecules across a selectively permeable
membrane
◉ The solution in the balloon is hypertonic relative to the solution in
the beaker.. Answer: A balloon permeable to water but not to glucose
contains a 10% glucose solution. A beaker contains a 5% glucose
solution. Which of the following is TRUE?
The solution in the balloon is hypotonic relative to the solution in
the beaker.
The solution in the balloon is hypertonic relative to the solution in
the beaker.
The solution in the balloon is isotonic; the solution in the beaker is
hypertonic.
The solution in the beaker is hypertonic relative to the solution in
the balloon.
STUDY GUIDE COMPLETE QUESTIONS AND
ANSWERS 100% CORRECT
◉ transport proteins... down. Answer: Facilitated diffusion across a
biological membrane requires ________ and moves a substance ________
its concentration gradient.
transport proteins... against
energy and transport proteins... against
energy... down
transport proteins... down
◉ exhibit a net movement to the side with lower water
concentration. Answer: When two solutions that differ in solute
concentration are placed on either side of a selectively permeable
membrane, and osmosis is allowed to take place, the water will
________.
exhibit a net movement to the side with lower solute concentration
exhibit an equal movement in both directions across the membrane
exhibit a net movement to the side with higher water concentration
exhibit a net movement to the side with lower water concentration
,◉ is hypotonic to the protozoan. Answer: Some protozoans have
special organelles called contractile vacuoles that continually
eliminate excess water from the cell. The presence of these
organelles tells you that the environment ________.
is hypotonic to the protozoan
contains a higher concentration of solutes than the protozoan
is isotonic to the protozoan
is hypertonic to the protozoan
◉ become turgid. Answer: In a hypotonic solution, a plant cell will
________.
become turgid
burst
become flaccid
undergo plasmolysis
◉ Active transport. Answer: Which of the following processes could
result in the net movement of a substance into a cell, if the substance
is more concentrated in the cell than in the surroundings?
,diffusion
active transport
osmosis
facilitated diffusion
◉ phagocytosis. Answer: The act of a white blood cell engulfing a
bacterium is ________.
osmosis
phagocytosis
exocytosis
diffusion
◉ expand. Answer: Examine the cells below. Cells with a higher
concentration of ions than the surrounding medium tend to ________.
divide
expand
stay about the same size and shape
shrink
, ◉ the diffusion of water across a selectively permeable membrane.
Answer: Osmosis can be defined as ________.
the diffusion of water across a selectively permeable membrane
active transport across a selectively permeable membrane
the diffusion of a solute across a selectively permeable membrane
the diffusion of nonpolar molecules across a selectively permeable
membrane
◉ The solution in the balloon is hypertonic relative to the solution in
the beaker.. Answer: A balloon permeable to water but not to glucose
contains a 10% glucose solution. A beaker contains a 5% glucose
solution. Which of the following is TRUE?
The solution in the balloon is hypotonic relative to the solution in
the beaker.
The solution in the balloon is hypertonic relative to the solution in
the beaker.
The solution in the balloon is isotonic; the solution in the beaker is
hypertonic.
The solution in the beaker is hypertonic relative to the solution in
the balloon.
