WorksheetsSS Biology--Osmosis & Diffusion Practice
Total questions: 28
Worksheet time: 14mins
Name
Class
Date
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.
Which means particle transport requires input of energy from the cell?
a)
diffusion
b)
active transport
c)
osmosis
3.
The diffusion of WATER across a selectively permeable membrane is called
a)
active transport.
b)
osmosis.
c)
osmotic pressure.
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.
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.
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.
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.
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.
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.
Use Figure 7-3 above to answer the following question. Which beaker is hypertonic?
a)
A
b)
B
c)
C
d)
None
11.
Use Figure 7-3 above to answer the following question. What will happen to the egg in beaker A if allowed to sit overnight?
a)
It will swell.
b)
It will shrink.
c)
It will stay the same.
d)
None of the above.
12.
14.) Use Figure 7-3 above to answer the following question. Which type of situation causes the egg to swell?
a)
hypertonic
b)
hypotonic
c)
isotonic
d)
all solutions will cause the egg to swell
13.
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
14.
Q20) 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. (Worksheet/Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic-- water will flow into the cell
b)
Hypotonic-- water will flow out of the cell
c)
Isotonic-- water will flow into and out of the cell equally
15.
Q21)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. (Worksheet/Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypotonic-- water will flow out of the cell
c)
Isotonic-- water will flow into and out of the cell equally
16.
Q 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. (Worksheet/Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypotonic-- water will flow out of the cell
c)
Isotonic-- water will flow into and out of the cell equally
17.
Q 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. (Worksheet/Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic-- water will flow into the cell
b)
Hypotonic-- water will flow out of the cell
c)
Isotonic-- water will flow into and out of the cell equally
18.
Q 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. (Worksheet/Hint: Total of 100% inside and outside of the cell.)
a)
Hypertonic -- water will flow out of the cell
b)
Hypotonic-- water will flow into the cell
c)
Isotonic-- water will flow into and out of the cell equally
19.
Suppose that a freshwater plant is mistakenly placed into a saltwater aquarium. Which process will occur?
a)
Water will move from the plant cells into the environment, shrinking the plant cells.
b)
Salt will move from the plant cells into the environment, shrinking the plant cells.
c)
Salt will move from the environment into the plant cells, swelling the plant cells.
20.
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
21.
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)
facilitated diffusion
22.
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.
23.
An organism’s genetic information is stored in which type of macromolecule?
a)
lipids
b)
proteins
c)
nucleic acids
24.
This macromolecule is used for short term energy storage and structural support.
a)
carbohydrates
b)
proteins
c)
nucleic acids
25.
This macromolecule transports substances and speeds up chemical reactions
a)
carbohydrates
b)
proteins
c)
nucleic acids
26.
Which organelle breaks down food (glucose) into energy that provides power for growth, development, and movement?
a)
golgi
b)
ER
c)
mitochondria
27.
Which of the following is a function of the nucleus?
a)
stores DNA
b)
controls most of the cell's processes
c)
all of the above
28.
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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