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Cell Transport and homeostasis Flashcards | StudBud
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Cell Transport and homeostasis
Cell Transport and homeostasis
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#celltransport A quiz to review topics of cellular transport and cell membrane structure
Flashcards
30 cards
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Questions
30
Answers
1
Which of the following is a function of the plasma membrane?
keep the cell wall in place
break down lipids, carbs, and proteins
store water, salt, proteins, and carbs
regulate the movement of material in & out of cell
2
Which means of particle transport requires no energy?
sodium/potassium pump
osmosis
endocytosis
exocytosis
3
Which of the following structures serves as the cell's boundary?
mitochondria
cell membrane
chloroplast
channel protein
4
Which term best describes the head of a phospholipid?
contains a phosphate group and attracts water
contains two fatty acids and repels water
contains two fatty acids and attracts water
contains a phosphate group and repels water
5
Which term best describes the tails of a phospholipid?
contains two fatty acids and repels water
contains two fatty acids and attracts water
contains a phosphate group and attracts water
contains a phosphate group and repels water
6
A plant cell is placed in a hypotonic solution. What will happen to the plant cell?
it will stay the same
it will enlarge
it will wilt
it will shrink
7
Inside of the A cell is considered
isotonic
hypotonic
hypertonic
active transport
8
Which term describes the relatively constant internal physical condition of an organism?
organ system
homeostasis
unicellularity
cell specialization
9
Which means of particle transport is shown in the figure?
exocytosis
protein pump
endocytosis
facilitated diffusion
10
What types of materials are expelled from cells during exocytosis?
water and glycerol
large molecules like hormones
small molecules such as carbon dioxide
charged ions
11
Diffusion occurs because
cellular energy forces molecules to collide with each other
molecules are attracted to one another
molecules constantly move and collide with each other
cellular energy pumps molecules across the cell membrane
12
If a cell with 60% solute, is placed in a solution with 10% solute, where will water move?
water would enter and leave in equal amounts
into the cell causing it to swell
out of the cell causing it to shrink
nothing will move
13
What is a major difference between facilitated diffusion and active transport?
facilitated diffusion requires energy
facilitated diffusion moves molecules through the membrane
active transport moves substances from low to high
active transport uses proteins
14
Inside of the C cell is considered
active transport
isotonic
hypotonic
hypertonic
15
Why is misting fruits and vegetables with water help them look fresh?
water cannot move through the cell membrane
plant cells in a hypotonic solution lose water
plants do not have a rigid cell wall
vacuoles fill with water due to osmosis
16
In order for multicellular organisms to communicate via chemical signals, the cell must have a
junction
GPS
antennae
receptor
17
Solution B is considered
active transport
isotonic
hypertonic
hypotonic
18
What are the levels of organization in a multicellular organism - smallest to largest?
cell, tissue, organ, organ system
cell, tissue, organ system, organ
tissue, organ, organ system, cell
organ system, organ, tissue, cell
19
What is osmosis?
diffusion of glucose across the cell membrane
sleeping on a textbook and acquiring knowledge
diffusion of water across the cell membrane
there is no such thing as osmosis
20
Why do plants wilt?
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
the plant cells are sleepy
21
During diffusion, when the concentration of molecules on both side of the membrane are the same
they will move out of the cell
they will continue to move in both directions
they will stop moving
they will move into the cell
22
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
solutes to move into the cell
solutes to move out of the cell
water to move out of the cell
water to move into the cell
23
When is equilibrium reached?
when the movement of molecules stops being random
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
24
Explain why more water is moving out the cell than into the cell
more water inside the cell than out
concentration of water outside the cell is too great
more solvent outside the cell than in
more solute in the cell than out
25
Why is drinking too much water be harmful to athletes?
cells are in a hypertonic solution and will shrink
cells are in a hypertonic solution and will swell
cells are in a hypotonic solution and will swell
cells are in a hypotonic solution and will shrink
26
Which movement of substances through a cell membrane requires energy?
active transport
osmosis
facilitated diffusion
diffusion
27
The diffusion of water across a selectively permeable membrane is called
osmotic pressure
osmosis
active transport
pinocytosis
28
At what point in the process of diffusion is equilibrium reached?
when there are more molecules out than in
equilibrium can never be reached
when there are more molecules in than out
when there are an equal amount of molecules
29
Algae cells are placed in an isotonic solution. Salt is added to the solution, what will happen
shrink
stay the same
they will burst
They will swell
30
Which of the following is an example of passive transport?
sodium/potassium pump
exocytosis
endocytosis
facilitated diffusion
