BIO 1201 GREGG EXAM 2 2026 FINAL PAPER
COMPLETE QUESTIONS AND ANSWERS FULL
SOLUTION
◉ selectively permeable.
Answer: regulates entry and exit of substances, direct cells
molecular traffic
◉ hydrophobic molecules.
Answer: dissolve in the lipid bilayer and pass through the membrane
rapidly
◉ hydrophillic molecules.
Answer: ions and polar molecules that do not cross the membrane
easily
◉ transport proteins.
Answer: allow passage of hydrophillic substances across the
membrane
◉ carrier proteins.
,Answer: bind to molecules and change shape to shuttle them across
the membrane
◉ diffusion.
Answer: the tendency for molecules to spread out evenly into the
available space
◉ Cocentration gradient.
Answer: molecules move from high to low concentration
◉ passive transport.
Answer: the movement of substances across a cell membrane
without the use of energy by the cell
◉ osmosis.
Answer: the diffusion of water across a selectively permeable
membrane
◉ hypotonic.
Answer: when comparing two solutions, the solution with the lesser
concentration of solutes
◉ isotonic.
, Answer: when the concentration of two solutions is the same
◉ hypertonic.
Answer: when comparing two solutions, the solution with the
greater concentration of solutes
◉ turgid (normal).
Answer: plant cell in hypotonic solution
◉ flaccid.
Answer: isotonic
◉ plasmolyzed.
Answer: plant cell in hypertonic solution
◉ facillitated diffusion.
Answer: when transport proteins make room for larger substances
to pass through cell membrane
◉ ion channels.
Answer: facilitate the diffusion of ions
COMPLETE QUESTIONS AND ANSWERS FULL
SOLUTION
◉ selectively permeable.
Answer: regulates entry and exit of substances, direct cells
molecular traffic
◉ hydrophobic molecules.
Answer: dissolve in the lipid bilayer and pass through the membrane
rapidly
◉ hydrophillic molecules.
Answer: ions and polar molecules that do not cross the membrane
easily
◉ transport proteins.
Answer: allow passage of hydrophillic substances across the
membrane
◉ carrier proteins.
,Answer: bind to molecules and change shape to shuttle them across
the membrane
◉ diffusion.
Answer: the tendency for molecules to spread out evenly into the
available space
◉ Cocentration gradient.
Answer: molecules move from high to low concentration
◉ passive transport.
Answer: the movement of substances across a cell membrane
without the use of energy by the cell
◉ osmosis.
Answer: the diffusion of water across a selectively permeable
membrane
◉ hypotonic.
Answer: when comparing two solutions, the solution with the lesser
concentration of solutes
◉ isotonic.
, Answer: when the concentration of two solutions is the same
◉ hypertonic.
Answer: when comparing two solutions, the solution with the
greater concentration of solutes
◉ turgid (normal).
Answer: plant cell in hypotonic solution
◉ flaccid.
Answer: isotonic
◉ plasmolyzed.
Answer: plant cell in hypertonic solution
◉ facillitated diffusion.
Answer: when transport proteins make room for larger substances
to pass through cell membrane
◉ ion channels.
Answer: facilitate the diffusion of ions
