1
BIO 103
BIO 103 Module 2 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. ______ (Hydrophilic/hydrophobic) molecules can dissolve in
the lipid bilayer and pass through the membrane rapidly:
hydrophobic
2. _____ (polar/nonpolar) molecules do not cross the
membrane easily: polar
3. transport proteins are sometimes called _____ proteins
when they have a tunnel that ions can pass through: channel
3. Channel proteins called _____ facilitate the passage of water:
aquaporins
4. Transport proteins have a _______ (hydrophilic/hydrophobic)
channel that certain molecules or ions can use as a tunnel:
hydrophillic
BIO 103
,5. Some transport proteins are called ______ proteins when
they change shape to shuttle molecules across the membrane:
carrier
6. The two types of transport proteins are _____ and _____
proteins: channel and carrier
7. A transport protein is _______ (specific/vairable) to the
substance it moves: specific
8. The three types of movement of molecules across a plasma
membrane are
______, ______, and ______: passive, facilitated, and active
9. Facilitated transport is a type of _____ transport: passive
10. Facilitated transport involves the use of _______ to speed up
the passive movement: proteins
11. _____ transport uses no energy: passive
12. ______ transport uses energy: active
13. _____ is the process of molecules spreading out evenly into
an available space: diffusion
,14 __________ occurs when as many molecules cross the
membrane in one direction as in the other: dynamic equilibrium
15. Substances diffuse _____ (with/against) the concentration
gradient: with
16. _______ is a term for the diffusion of water: osmosis
17. Water diffuses from a region of _____ (high/low) solute
concentration to an area of ____ (high/low) solute concentration:
low, high
18. _______ is the ability of a surrounding solution to cause a
cell to gain or lose water: tonicity
19. _______ solutions involve a solute concentration outside the
cell that is the same as inside the cell: isotonic
20. ______ solutions involve a solute concentration outside the
cell that is greater than that inside the cell: hypertonic
21. In a ____ solution, the cell loses water: hypertonic
22. ______ solutions involve a solute concentration outside the
cell that is less than that inside the cell: hypotonic
, 23. In a ______ solution, the cell gains water: hypotonic
24. Cells in a ______ solution will shrivel up: hypertonic
25. Cells in a _____ solution will shrivel up: hypotonic
26. _________ is the control solute concentrations and water
balance and is a necessary adaptation for life: osmoregulation
27. The two types of channel proteins in facilitated diffusion
include ____ and
_____: aquaporins and ion channels
28. Active transport requires _____ as an energy source to
activate proteins embedded in the membranes: atp
29. ______ transport allows cells to maintain concentration
gradients that differ from their surroundings: active
30. A sodium-potassium pump results in _____ na+ ions and
____ k+ ions: 3, 2
31. In a sodium-potassium pump, ____ leaves the cell while ____
enters the cell: na+, k+
BIO 103
BIO 103 Module 2 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. ______ (Hydrophilic/hydrophobic) molecules can dissolve in
the lipid bilayer and pass through the membrane rapidly:
hydrophobic
2. _____ (polar/nonpolar) molecules do not cross the
membrane easily: polar
3. transport proteins are sometimes called _____ proteins
when they have a tunnel that ions can pass through: channel
3. Channel proteins called _____ facilitate the passage of water:
aquaporins
4. Transport proteins have a _______ (hydrophilic/hydrophobic)
channel that certain molecules or ions can use as a tunnel:
hydrophillic
BIO 103
,5. Some transport proteins are called ______ proteins when
they change shape to shuttle molecules across the membrane:
carrier
6. The two types of transport proteins are _____ and _____
proteins: channel and carrier
7. A transport protein is _______ (specific/vairable) to the
substance it moves: specific
8. The three types of movement of molecules across a plasma
membrane are
______, ______, and ______: passive, facilitated, and active
9. Facilitated transport is a type of _____ transport: passive
10. Facilitated transport involves the use of _______ to speed up
the passive movement: proteins
11. _____ transport uses no energy: passive
12. ______ transport uses energy: active
13. _____ is the process of molecules spreading out evenly into
an available space: diffusion
,14 __________ occurs when as many molecules cross the
membrane in one direction as in the other: dynamic equilibrium
15. Substances diffuse _____ (with/against) the concentration
gradient: with
16. _______ is a term for the diffusion of water: osmosis
17. Water diffuses from a region of _____ (high/low) solute
concentration to an area of ____ (high/low) solute concentration:
low, high
18. _______ is the ability of a surrounding solution to cause a
cell to gain or lose water: tonicity
19. _______ solutions involve a solute concentration outside the
cell that is the same as inside the cell: isotonic
20. ______ solutions involve a solute concentration outside the
cell that is greater than that inside the cell: hypertonic
21. In a ____ solution, the cell loses water: hypertonic
22. ______ solutions involve a solute concentration outside the
cell that is less than that inside the cell: hypotonic
, 23. In a ______ solution, the cell gains water: hypotonic
24. Cells in a ______ solution will shrivel up: hypertonic
25. Cells in a _____ solution will shrivel up: hypotonic
26. _________ is the control solute concentrations and water
balance and is a necessary adaptation for life: osmoregulation
27. The two types of channel proteins in facilitated diffusion
include ____ and
_____: aquaporins and ion channels
28. Active transport requires _____ as an energy source to
activate proteins embedded in the membranes: atp
29. ______ transport allows cells to maintain concentration
gradients that differ from their surroundings: active
30. A sodium-potassium pump results in _____ na+ ions and
____ k+ ions: 3, 2
31. In a sodium-potassium pump, ____ leaves the cell while ____
enters the cell: na+, k+
