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HB: Cell Transport Flashcards | StudBud
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HB: Cell Transport
HB: Cell Transport
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#celltransport A quiz to review topics of cellular transport and cell membrane structure
Flashcards
32 cards
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Questions
32
Answers
1
Which term best describes the head of a phospholipid?
contains a phosphate group and attracts water
contains two fatty acids and attracts water
contains two fatty acids and repels water
contains a phosphate group and repels water
2
Carrier proteins move molecules that are
like water
small, ionic
big
small, polar
3
What helps keep the cell membrane flexible?
integral protein
carbohydrate chain
cholesterol
peripheral protein
4
What is a major difference between facilitated diffusion and active transport?
active transport uses proteins
facilitated diffusion moves molecules through the membrane
facilitated diffusion requires energy
active transport moves substances from low to high
5
Which of the following is an example of passive transport?
endocytosis
sodium/potassium pump
exocytosis
facilitated diffusion
6
Which cell membrane structure helps identify the cell?
carbohydrate chain
peripheral protein
cholesterol
transmembrane protein
7
Why is drinking too much water be harmful to athletes?
cells are in a hypotonic solution and will swell
cells are in a hypertonic solution and will swell
cells are in a hypotonic solution and will shrink
cells are in a hypertonic solution and will shrink
8
Endocytosis creates
bulk transport
vesicles
phospholipid bilayers
pseudopods
9
The diffusion of water across a selectively permeable membrane is called
osmotic pressure
active transport
osmosis
pinocytosis
10
At what point in the process of diffusion is equilibrium reached?
when there are more molecules in than out
equilibrium can never be reached
when there are more molecules out than in
when there are an equal amount of molecules
11
Which means of particle transport is shown in this figure?
protein pump
exocytosis
facilitated diffusion
endocytosis
12
If a cell with 60% solute, is placed in a solution with 10% solute, where will water move?
out of the cell causing it to shrink
nothing will move
into the cell causing it to swell
water would enter and leave in equal amounts
13
Why does misting fruits and vegetables with water help them look fresh?
plant cells in a hypotonic solution lose water
water cannot move through the cell membrane
plants do not have a rigid cell wall
vacuoles fill with water due to osmosis
14
Which cell membrane protein crosses both layers of the phospholipid bilayer?
cholesterol
peripheral protein
transmembrane protein
Chicken McNuggets
15
When is dynamic equilibrium reached?
when there is continuous movement, but no change
when the rate of change in the solution slows by one half
when the molecules are mixed and stop moving
when the movement of molecules stops being random
16
What is osmosis?
sleeping on a textbook and acquiring knowledge
diffusion of glucose across the cell membrane
there is no such thing as osmosis
diffusion of water across the cell membrane
17
Solution A is considered
hypotonic
active transport
isotonic
hypertonic
18
Solution B is considered
hypotonic
isotonic
active transport
hypertonic
19
Which means of particle transport requires no energy?
sodium/potassium pump
osmosis
endocytosis
exocytosis
20
Which movement of substances through a cell membrane requires energy?
facilitated diffusion
diffusion
active transport
osmosis
21
Algae cells are placed in an isotonic solution. Salt is added to the solution, what will happen
they will burst
shrink
They will swell
stay the same
22
Which of the following structures serves as the cell's boundary?
chloroplast
mitochondria
channel protein
plasma membrane
23
A plant cell is placed in a hypotonic solution. What will happen to the plant cell?
it will shrink
it will wilt
it will enlarge
it will stay the same
24
Solution C is considered
hypotonic
isotonic
hypertonic
active transport
25
Which term best describes the tails of a phospholipid?
contains two fatty acids and repels water
contains a phosphate group and attracts water
contains a phosphate group and repels water
contains two fatty acids and attracts water
26
What types of materials are expelled from cells during exocytosis?
large molecules like hormones
charged ions
small molecules such as carbon dioxide
water and glycerol
27
Which of the following is a function of the plasma membrane?
regulate the movement of material in & out of cell
keep the cell wall in place
store water, salt, proteins, and carbs
break down lipids, carbs, and proteins
28
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
solutes to move into the cell
water to move out of the cell
water to move into the cell
solutes to move out of the cell
29
During diffusion, when the concentration of molecules on both side of the membrane are the same
they will move into the cell
they will continue to move in both directions
they will stop moving
they will move out of the cell
30
Explain why more water is moving out the cell than into the cell
concentration of water outside the cell is too great
more solvent outside the cell than in
more solute in the cell than out
more water inside the cell than out
31
Why do plants wilt?
the plant cells are sleepy
plants don't wilt they get lazy
plant cells are in a hypotonic solution & the cells swell
plant cells are in a hypertonic solution & the cells shrink
32
Which term describes the relatively constant internal physical condition of an organism?
cell specialization
organ system
unicellularity
homeostasis
