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Name: KEY
ACTIVE AND PASSIVE CELL TRANSPORT
Match the definition on the left with the term on the right.
1. ___C__ release of wastes or cell products from inside to outside a cell
2. __D___ diffusion of water molecules through a selectively permeable
membrane
3. __B___ continuous movement of particles but no overall change in
concentration
4. __A___ movement of particles from an area of higher concentration to
one
of lower concentration
a.
b.
c.
d.
diffusion
equilibrium
exocytosis
osmosis
In the space at the left, write true if the statement is true. If the statement is false, change the
bolded term to make the statement true. Write this answer in the blank provided.
Hypotonic
5. A solution in which the concentration of dissolved substances is lower than the
concentration inside a cell is hypertonic.
Active Transport 6. In passive transport, the movement of particles across a membrane requires energy.
True
7. Endocytosis is a process by which a cell membrane surrounds and takes in material from
the environment.
Facilitated Diffusion 8. The passive transport of material across a membrane by means of transport proteins is
called activated diffusion.
True
9. A membrane that allows only some materials to pass through shows
selective permeability.
Circle the word or phrase that best completes the statement or answers the question.
10. The structure most responsible for maintaining cell homeostasis is the
cytoplasm
cell wall
mitochondria
11. A cell membrane is made up of a(n)
cholesterol layer
enzyme layer
phospholipid bilayer
12. Which of the following is not a form of passive transport?
facilitated diffusion
diffusion
endocytosis
13. Diffusion continues until
equilibrium is reached
one side has less
14. If a cell is placed in salt water, water leaves the cell by
osmosis
diffusion
cell membrane
protein layer
osmosis
one side has more
active transport
15. A cell moves particles from a region of lesser concentration to a region of greater concentration by
facilitated diffusion
osmosis
passive transport
active transport
Use the pictures on the left to answer the questions on the right.
16. After digestion:
= glucose molecule
blood
cell
a. Which side has the higher concentration of glucose? Blood
b. Which way will the glucose go? Into the cell
c. Does this require energy? No
d. Is this active or passive transport? Passive
e. What specific type of transport is this? Facilitated Diffusion
17. Plant cell after being over-watered.
a. Water rushes into the plant cell’s vacuole. Is this diffusion or
osmosis? Osmosis
b. Is this passive or active transport? Passive
c. Is the plant cell in a hypertonic, hypotonic, or isotonic
environment? Hypotonic Enviornment
18. Plant cell after not being watered lately, so it has begun to wilt:
a. Which way will the water go? Into the vacuole, or out of the vacuole? Out
of the vacuole.
b. By what process will the water move? Osmosis
c. Is the plant cell in a hypertonic, hypotonic, or isotonic environment?
Hypertonic Environment
19. An amoeba engulfs a particle of food.
a. Does this require energy? Yes
b. Is this active or passive transport? Active Transport
c. Is this endocytosis or exocytosis? Endocytosis
20. An amoeba expels waste.
a. Does this require energy? Yes
b. Is this active or passive transport? Active Transport
c. Is this endocytosis or exocytosis? Exocytosis
21. A cell full of glucose is surrounded by blood:
a. Will water move from the blood to the cell, or from the cell to
the blood? From the blood into the cell.
b. Which has the higher concentration of water, the cell or the
blood? The blood.
c. Does this require energy? No
d. Is this active or passive transport? Passive
e. Is this diffusion or osmosis? Osmosis
f. Does the blood cause a hypotonic or hypertonic environment for
the cell? Hypotonic Environment
g. What will more likely occur to the cell if the movement of water
continues in the same direction? The cell will swell and
eventually burst and die.