Download Homeostasis and Diffusion quiz B

Homeostasis and Diffusion quiz A
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.
the kinetic energy of molecules.
ion channels.
carrier proteins.
energy from the cell in the form of ATP
A structure that can move excess water out of unicellular organisms is a
a.
b.
c.
d.
7.
from a hypertonic solution to a hypotonic solution.
from an isotonic solution to another isotonic solution.
through gated water channels.
from a hypotonic solution to a hypertonic solution
All forms of passive transport depend on
a.
b.
c.
d.
6.
simple diffusion.
Osmosis.
facilitated diffusion.
diffusion through ion channels.
Net movement of water across a cell membrane occurs
a.
b.
c.
d.
5.
has a large concentration gradient.
will undergo diffusion.
will undergo osmosis.
is in equilibrium.
A type of transport in which water moves across a membrane and down its concentration gradient
is
a.
b.
c.
d.
4.
a difference in the concentration of molecules throughout a space.
all of the above
a cell membrane.
an aqueous solution.
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 hypotonic solution.
None of the above
in a isotonic solution.
in a hypertonic solution.
A
75% Water
25% Solute
50% water and 50% solute
B
75% Water
25% Solute
75% water and 25% soute
C
75% Water
25% Solute
100% water and 0% solute
8. Which beaker contains a hypertonic solution
when compared to the egg cell?
a. A
b. B
c. C
d. None
9. What will happen to the egg in beaker A 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
shrink?
a. Hypertonic
b. Hypotonic
c. Isotonic
d. All solutions will cause the egg to
shrink
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