Which term best describes the head of a phospholipid?

contains a phosphate group and attracts water

Which term best describes the tails of a phospholipid?

contains two fatty acids and repels water

At what point in the process of diffusion is equilibrium reached?

when there are an equal amount of molecules

plant cells are in a hypertonic solution & the cells shrink

Explain why more water is moving out the cell than into the cell

more water inside the cell than out

When is dynamic equilibrium reached?

when there is continuous movement, but no change

Why is drinking too much water be harmful to athletes?

cells are in a hypotonic solution and will swell

Why is misting fruits and vegetables with water help them look fresh?

vacuoles fill with water due to osmosis

During diffusion, when the concentration of molecules on both side of the membrane are the same

they will continue to move in both directions

Which of the following is a function of the plasma membrane?

regulate the movement of material in & out of cell

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

What is a major difference between facilitated diffusion and active transport?

active transport moves substances from low to high

diffusion of water across the cell membrane

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Exam III Cell Transport

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#celltransport A quiz to review topics of cellular transport and cell membrane structure

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Questions 30

Answers

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

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