WorksheetsOsmosis & Diffusion Review
Total questions: 35
Worksheet time: 18mins
Name
Class
Date
1.
1.) Diffusion is the movement of molecules from...
a)
an area of high concentration to an area of low concentration.
b)
an area of low concentration to an area of high concentration.
c)
an area of equilibrium to an area of high concentration.
2.
2.) Which means particle transport requires input of energy from the cell?
a)
diffusion
b)
active transport
c)
osmosis
3.
3.) The diffusion of WATER across a selectively permeable membrane is called
a)
active transport.
b)
osmosis.
c)
osmotic pressure.
4.
4.) An animal cell (think raisin) that is surrounded by fresh water will burst because the osmotic pressure causes
a)
water to move into the cell.
b)
water to move out of the cell.
c)
solutes to move out of the cell.
5.
5.) The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of?
a)
lipids
b)
carbohydrates
c)
proteins
6.
6.) When the concentration of molecules on both sides of a membrane is the same, the molecules will
a)
move across the membrane to the inside of the cell.
b)
move across the membrane in both directions.
c)
stop moving across the membrane.
7.
7.) In isotonic solutions...
a)
water moves into and out of the cell equally.
b)
water moves into the cell.
c)
water moves out of the cell.
d)
water doesn't move at all.
8.
8.) In hypotonic solutions...
a)
water moves into and out of the cell equally.
b)
water moves into the cell.
c)
water moves out of the cell.
d)
water doesn't move at all.
9.
9.) In hypertonic solutions...
a)
water moves into and out of the cell equally.
b)
water moves into the cell.
c)
water moves out of the cell.
d)
water doesn't move at all.
10.
10.) Turgor (how straight the plant stands up) is the internal cytoplasmic pressure that results from the amount of water absorbed by plant cells. A plant with the least amount of turgor pressure will stand straight up or limp?
a)
straight
b)
Limp
11.
12.) A red blood cell placed in distilled (pure) water will
a)
shrink
b)
swell
c)
not change shape
12.
13.) What will happen to the egg in beaker with isotropic solution if allowed to sit overnight?
a)
It will swell.
b)
It will shrink.
c)
It will stay the same.
d)
None of the above.
13.
14.) Which type of situation causes the egg to swell?
a)
hypertonic
b)
hypotonic
c)
isotonic
d)
all solutions will cause the egg to swell
14.
16.) What happens once equilibrium is reached
a)
roughly equal numbers of molecules move in either directions across a semi permeable membrane
b)
there is no further change in concentration on either side of the membrane
c)
both statements are correct
15.
20.) A cell with 90% water is placed into a beaker with 10% solute. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
16.
21.) A cell with 18% saltwater is placed into a beaker with 75% saltwater. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
17.
22.) A cell with 90% water is placed into a beaker with 80% water. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
18.
23.) A beaker that contains 50% water is holding a cell that contains 50% salt. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
19.
24.) A beaker that contains 25% sugar is holding a cell with 45% water. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
20.
25) A beaker with 37% solute holds a cell with 90% water. Identify the type of solution and also the direction that water will flow. (Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypertonic-- water will flow into the cell
c)
Hypotonic-- water will flow out of the cell
d)
Hypotonic-- water will flow into the cell
e)
Isotonic-- water will flow into and out of the cell equally
21.
27.) Using the graph in Figure 7-6, what is the independent variable in this experiment?
a)
The osmometer
b)
Time in minutes
c)
Distance traveled in mm
d)
The sucrose solution
22.
28.) Once equilibrium is reached in the apparatus or cell, what will happen
a)
The molecules will not move anymore since they are equal
b)
The molecules will continue to move back and forth equally
c)
Equilibrium is never reached
23.
29.) Examine Figure 7-1 above. The solutions are separated by a semipermeable membrane that allows salt to pass but does not allow starch to pass. Which statement is true?
a)
Salt will move from B to A by diffusion.
b)
Salt will move from B to A by osmosis.
24.
32.) The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering, this membrane is called
a)
perforated
b)
semi-permeable
c)
impassable
25.
33.) The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane in Figure 7-0?
a)
simple osmosis
b)
simple diffusion
c)
facilitated diffusion
26.
34.) A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?
a)
The swollen gums have absorbed the saltwater solution.
b)
The saltwater solution lowers the temperature of the water in the gums.
c)
The water in the gums has moved out due to the high concentration of salt in the solution.
27.
35.) How do you describe this type of transport across the cell membrane in Figure 7-7?
a)
co-transport
b)
active transport
c)
passive transport
28.
36.) Carrot sticks that are left in a dish of freshwater for several hours become stiff and hard. Similar sticks left in a saltwater solution become limp and soft. From this we can deduce that the freshwater is ______ and the saltwater is ________ to the cells of the carrot sticks.
a)
hypotonic, hypotonic
b)
hypotonic, hypertonic
c)
hypertonic, hypertonic
29.
37.) A beaker is divided into two halves, A & B, by a membrane that is freely permeable to the water and salt, but not to protein. Side A is half-filled with a solution of 8% protein, while side B is half filled with a 2% protein solution. Predict what would happen to side A after a few hours.
a)
The number of water molecules has decreased.
b)
The number of water molecules has increased.
c)
The percentage of water has decreased.
30.
38. An organism’s genetic information is stored in which type of macromolecule?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
31.
39. This macromolecule is used for short term energy storage and structural support.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
32.
40. This macromolecule transports substances and speeds up chemical reactions
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
33.
41. Which organelle breaks down food (glucose) into energy that provides power for growth, development, and movement?
a)
golgi
b)
ER
c)
mitochondria
34.
42. Which of the following is a function of the nucleus?
a)
stores DNA
b)
controls most of the cell's processes
c)
contains information needed to make proteins
d)
all of the above
35.
43. Which of the following is a function of the cell membrane?
a)
breaks down lipids, carbohydrates, and proteins from food
b)
keeps the cell wall in place
c)
regulates which materials enter and leave the cell
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