Download Transport Study Guide Key

Cellular Transport Review
OSMOSIS
In the pictures below, the dots represent the solutes.
Define solute-
______A___________
_________B_________
_________C________
__B________There is a GREATER concentration of solute molecules
OUTSIDE the cell than inside.
__A________ There is a LOWER concentration of solute molecules
OUTSIDE the cell than inside.
_C_________There is the SAME concentration of solute molecules
outside the cell as inside.
The pressure inside a plant cell caused by water pushing against the cell wall
called ___turgor________________ pressure.
is
This is a picture of a(n) animal/plant cell in a high water solution.
The SHRINKING of plant cells when water leaves so the cell membrane
pulls away from the cell wall is called
__plasmolysis/wilting_____________________.
Animal cells will __shrink_________________ when placed in a high salt
solution.
Cells are in ___equilibrium___________________ when the amount of water leaving the cell is
the same as the amount of water entering.
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MULTIPLE CHOICE: Circle the answer(s) that best completes the sentence.
The substance that dissolves to make a solution is called the ___________________
A. diffuser
B. solvent
C. solute
D. concentrate
During diffusion molecules tend to move _____________________
A. up the concentration gradient
B. down the concentration gradient
C. from an area of lower concentration to an area of higher concentration
D. in a direction that doesn’t depend on concentration
When the concentration of a solute is the same throughout a system, the system has reached
__________________.
A. maximum concentration
B. homeostasis
C. osmotic pressure
D. equilibrium
The diffusion of water across a selectively permeable membrane is called ________________.
A. active transport
B. facilitated diffusion
C. osmosis
D. phagocytosis
Endocytosis and exocytosis are all kinds of _______________ transport.
A. active
B. passive
Glucose enters cells most rapidly by _________________
A. diffusion
B. facilitated diffusion
C. ion channels
D. phagocytosis
Active transport uses energy in the form of ___________________.
A. ADP
B. ATP
C. UPS
D. FEDX
________________ transport requires energy from ATP to move substances across membranes.
A. Passive
B. Active
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A cell must expend energy to transport substances using ________________.
A. diffusion
B. facilitated diffusion
C. endocytosis
D. osmosis
White blood cells engulf, digest, and destroy invading bacteria using __________________.
A. Facilitated diffusion
B. Exocytosis
C. Phagocytosis
D. Bigtoesis
Which of the following helps in facilitated diffusion .
A. Cholesterol
B. Phospholipids
C. Proteins
D. Fatty acid tails
All of the
A.
B.
C.
D.
following are kinds of passive transport EXCEPT ________________________
diffusion
facilitated diffusion
osmosis
phagocytosis
The pressure exerted by water moving during osmosis is called __________________ pressure.
A. tonic
B. diffusion
C. selectively permeable
D. osmotic
Placing an animal cell in a high salt solution will cause water to ______________________.
A. move into the cell
B. move out of the cell
When molecules move DOWN the concentration gradient it means they are moving from ______________
A. an area of low concentration to an area of higher concentration
B. an area of high concentration to an area of lower concentration
Gases like oxygen and carbon dioxide move across cell membranes using _____________________
A. endocytosis
B. ion channels
C. diffusion
D. facilitated diffusion
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Complete the transport terms.
1. Active transport requires _E_ NERGY __ __ __ to move molecules across membranes.
2. _A_ TP__ __ is the molecule that provides the energy for active transport.
3. _D_ IFFUSION__ __ __ __ __ __ __ __moves oxygen and carbon dioxide molecules from a high
concentration to
a low concentration across membranes.
4. Water moves across membranes by _O_ _SMOSIS_ __ __ __ __ __.
5. _P_ ASSIVE__ __ __ __ __ __ transport does NOT REQUIRE energy.
6. During _F_ ACILITATED __ __ __ __ __ __ diffusion carrier proteins grab glucose molecules, change
shape, and flip to the other side of the membrane, like a revolving door.
7. A _C_ _ARRIER __ __ __ __ protein is an integral membrane protein that helps move molecules across
a
cell membrane.
8. A CONCENTRATION _G_ RADIENT__ __ __ __ __ __ __ forms whenever there is a difference in
concentration between one place and another.
9.Endocytosis, phagocytosis, and Na+-K+ pumps are all kinds of _A_ _CTIVE_ __ __ __ __ transport
because
they use energy to move substances across membranes.
10. When molecules move from high to low along a concentration gradient we say they are moving
“_D_ OWN__ __ __” the gradient.
11. White blood cells use _P_ HAGOCYTOSIS__ __ __ __ __ __ __ __ __ __ __ to engulf and destroy
bacteria that the glycoproteins recognize as “not self”.
LOOK AT THE DIAGRAMS. The black dots represent solute molecules dissolved in water
Draw and arrow (showing which way
water will move) from one beaker to
another.
In which beaker is the concentration of
solute greater?
A
A
B
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or
B
If the solute (dots) in this diagram is unable to pass through the dividing membrane,
what will happen?
A. the water level will rise on the right side of the tube
B. the water level will rise on the left side of the tube
C. the water level will stay equal on the two sides
COMPARE/CONTRAST
the kinds of transport
Active (ATP)
or
Passive
With the Gradient
Example of
substance(s) that
use this kind of
transport in cells
Passive
With
Passive
With
Passive
With
Water
Active
Against
Sodium, Potassium
Active
N/A
Active
N/A
When white blood
cells engulf bacteria
When white blood
cells release waste
DIFFUSION
FACILITATED
DIFFUSION
Oxygen, Carbon
Dioxide, Iodine,
Poots
Glucose and other
large molecules
OSMOSIS
MOVEMENT FROM LOW
TO HIGH
ENDOCYTOSIS
(PHAGOCYTOSIS)
EXOCYTOSIS
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