Homeostasis and Diffusion quiz B
1.
The process of diffusion requires
a.
b.
c.
d.
2.
If the molecular concentration of a substance is the same throughout a space, the substance
a.
b.
c.
d.
3.
energy from the cell in the form of ATP.
the kinetic energy of molecules.
ion channels.
carrier proteins.
A structure that can move excess water out of unicellular organisms is a
a.
b.
c.
d.
7.
from a hypotonic solution to a hypertonic solution.
from a hypertonic solution to a hypotonic solution.
from an isotonic solution to another isotonic solution.
through gated water channels.
All forms of passive transport depend on
a.
b.
c.
d.
6.
simple diffusion.
facilitated diffusion.
diffusion through ion channels.
Osmosis.
Net movement of water across a cell membrane occurs
a.
b.
c.
d.
5.
has a large concentration gradient.
is in equilibrium.
will undergo diffusion.
will undergo osmosis.
A type of transport in which water moves across a membrane and down its concentration gradient
is
a.
b.
c.
d.
4.
a cell membrane.
an aqueous solution.
a difference in the concentration of molecules throughout a space.
all of the above
carrier protein.
contractile vacuole.
ion channel.
cell membrane pump.
Plasmolysis of a human red blood cell would occur if the cell were
a.
b.
c.
d.
in a isotonic solution.
in a hypertonic solution.
in a hypotonic solution.
None of the above
e.
A
75% Water
25% Solute
100% water and 0% solute
9. What will happen to the egg in beaker B if
allowed to set overnight?
a. It will swell
b. It will shrink
c. It will stay the same
10. Which type of solution causes the egg to swell?
a. Hypertonic
b. Hypotonic
c. Isotonic
d. All solutions will cause the egg to shrink
B
75% Water
25% Solute
50% water and 50% solute
C
8. Which beaker contains a hypotonic solution when
compared to the egg cell?
a. A
b. B
c. C
d. None
75% Water
25% Solute
75% water and 25% soute
11. What is the best explanation as to why the room
smelled like vinegar?
a. Diffusion of vinegar molecules
b. Osmosis of vinegar molecules
c. Hypertonic vinegar molecules
d. Hypotonic vinegar molecules
12. Cells must have ways to maintain homeostasis.
Which is an example of ways cells can do this?
a. Plant cells have a cell wall to keep from
bursting
b. Fresh water single-celled animals
constantly pump water out
c. Eggs have shells to keep them from
dehydrating
d. All of the above are examples