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Name: __________________
Date: __________
Period: ___________
Quiz #10: Movement Across the Membrane
1. In order to enter cells during osmosis, water
must pass through
A the nucleus
B the blood vessels
C the cell membrane
D the respiratory system
2. A cell which normally lives in 23% saltwater
environment was moved into another environment.
Which environment would cause the cell to increase
in size the most?
A 2% saltwater concentration
B 10% saltwater concentration
C 23% saltwater concentration
D 28% saltwater concentration
3. A cell which normally lives in 23% saltwater
environment was moved into another environment.
Which environment would cause the cell to remain
the size?
A 2% saltwater concentration
B 10% saltwater concentration
C 23% saltwater concentration
D 28% saltwater concentration
4. Human red blood cells contain dissolved salts
and other substances. Which of these statements
describes what happens to red blood cells after they
are put in a container of pure water?
A Cells remain unchanged because water is
unable to move into the cells.
B Cells shrink because water moves out of
the cells.
C Cells swell and burst because water
moves into the cells.
D Cells remain unchanged because the water
in the cells is in equilibrium with the
environment.
Use the following description and chart below
to answer questions 5&6.
A student cut three identical slices of potato.
She determined the mass of each slice and
placed them into labeled beakers. She then
added different salt solutions to each beaker.
After 20 minutes, she removed each potato slice
from its solution, dried it with a paper towel,
and determined its mass. Results of this
experiment are shown in the table below.
Beaker
Solution
1
2
Distilled
Water
10% Salt
3
20 % Salt
Change in
Mass
Gained 3.0
grams
Lost 0.4
grams
Lost 5.2
grams
5. In what type of solution is the potato in
beaker #3?
A hypertonic
B hypotonic
C isotonic
D homeotonic
6. What is the most likely salt concentration
within the potatoes?
A 0% salt
B 9% salt
C 14% salt
D 20% salt
7. Which of these describes the primary function of
cell membranes?
A They allow certain molecules to enter and
exit the cell.
Use the following figure to answer questions
11&12.
B They allow all molecules to enter and exit
the cell.
C. They do not allow molecules to enter or
exit the cell.
D. They allow all molecules to enter the cell,
but not exit.
Use the following description for questions 8&9.
In a freshwater pond, single-celled organisms may
have a special structure called a contractile vacuole,
which is used to pump water out of the cell.
8. If the organism is continually gaining water, it is
in what type of environment?
A hypotonic
B hypertonic
C isotonic
D homeotonic
9. The organism using energy to remove water that
continually enters its cell, is an example of which of
the following?
A osmosis
B diffusion
C active transport
D passive transport
10. A scientist wants to study photosynthesis in a
newly discovered species. Which of these cell
structures should the scientist study?
A vacuoles
B chloroplasts
C mitochondria
D ribosomes
11. What kind of molecule is Structure A?
A an amino acid
B a lipid
C a carbohydrate
D a nucleic acid
12. What characteristic of Part 1 of Structure A
gives it the ability to attract water molecules?
A. acidity
B. basicity
C. density
D. polarity
Use the following diagram to answer questions
13 &14.
13. Diagram A shows which of the following
processes?
A. diffusion
B. endocytosis
C. exocytosis
D. osmosis
14. Which of the following particles would
most likely be released from the cell through the
process shown in Diagram B?
A. oxygen
B. waste
C. water
D. food
Use the following description and diagram below to
answer questions 15 &16.
Use the following description and chart below
to answer questions 18-20.
Starch turns blue-black in the presence of iodine
solution. A selectively permeable dialysis sac
containing a starch solution is placed into a beaker
of iodine solution.
Kidneys remove waste products from the blood.
Dialysis machines work like artificial kidneys.
Blood is taken out of the person’s body and run
through a dialysis machine. While in the
machine, the blood passes through a selectively
permeable membrane. On the outside of the
membrane is a solution that is similar to blood
but without the waste. As the patient’s blood
moves through the tubing, the waste moves
from the blood into the machine’s solution. The
clean blood is returned to the patient.
15. If the dialysis sac is permeable only to water
and iodine, what will the solutions in the beaker and
the sac look like after 2 hours?
A The iodine solution in the beaker will
turn blue-black; the starch solution will not
change.
B The starch solution in the dialysis sac will
turn blue-black; the iodine solution will not
change.
C Neither solution will turn blue-black.
D Both solutions will turn blue-black.
16. Which of these processes is demonstrated by
the experiment shown in the diagram?
A endocytosis
B diffusion
C osmosis
D active transport
17. Which part of the cell is responsible for
releasing energy?
A nucleus
B vacuole
C chloroplast
D mitochondria
Solution
Membrane
Blood
Waste
18. Which direction does the waste move in?
A from the blood to the solution
B from the solution to the blood
C in both directions through the
membrane
D remains within the blood
19. What causes the waste to move?
A difference in pH
B difference in temperature
C difference in concentration of blood
D difference in concentration of waste
20. What process moves the waste products
from the blood as it flows through the
membrane in the dialysis machine?
A endocytosis
B diffusion
C osmosis
D active transport