plant cells are in a hypertonic solution & the cells shrink

Why is a water moving out of the cell:

The concentration of water is lower on the outside.

What is a difference between facilitated diffusion and active transport?

active transport moves substances from low to high

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

when there are an equal amount of molecules on both sides

When is equilibrium reached?

when there is continuous movement, but no change

diffusion of water across the cell membrane

Which term best describes the tails of a phospholipid?

contains two fatty acids and repels water

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

vacuoles fill with water due to osmosis

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

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

the molecules 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

Why is drinking too much water harmful?

cells are in a hypotonic solution and will swell

Which term best describes the head of a phospholipid?

contains a phosphate group and attracts water

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Cell Transport - Unit 3.3-3.10

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Questions 28

Answers

1
Why do plants wilt?
plant cells are in a hypertonic solution & the cells shrink
plant cells are in a hypotonic solution & the cells swell
2
Which of the following is an example of passive transport?
endocytosis
facilitated diffusion
sodium/potassium pump
exocytosis
3
Why is a water moving out of the cell:
The concentration of water is lower on the outside.
The concentration of water is equal on the inside & outside
The concentration of water is higher on the outside.
4
Solution C is considered
hypertonic
active transport
isotonic
hypotonic
5
Which movement of substances through a cell membrane requires energy?
facilitated diffusion
osmosis
diffusion
active transport
6
What is a difference between facilitated diffusion and active transport?
facilitated diffusion requires energy
active transport uses proteins
active transport moves substances from low to high
facilitated diffusion moves molecules through the membrane
7
Solution A is considered
isotonic
hypotonic
active transport
hypertonic
8
The diffusion of water across a selectively permeable membrane is called
pinocytosis
active transport
osmosis
osmotic pressure
9
Which means of particle transport is shown in the figure?
exocytosis
endocytosis
protein pump
facilitated diffusion
10
At what point in the process of diffusion is equilibrium reached?
when there are an equal amount of molecules on both sides
equilibrium can never be reached
when there are more molecules inside than outside the cell
when there are more molecules outside than inside the cell
11
Which type of transport requires no energy?
exocytosis
osmosis
endocytosis
sodium/potassium pump
12
Which term describes the relatively constant internal physical condition of an organism?
cell specialization
unicellularity
organ system
homeostasis
13
Algae cells are placed in an isotonic solution. Salt is added to the solution, what will happen
stay the same
shrink
They will swell
they will burst
14
When is equilibrium reached?
when the molecules are mixed and stop moving
when the rate of change in the solution slows by one half
when the movement of molecules stops being random
when there is continuous movement, but no change
15
An animal cell that is surrounded by fresh water will burst because osmosis causes
solutes to move out of the cell
solutes to move into the cell
water to move into the cell
water to move out of the cell
16
What is osmosis?
there is no such thing as osmosis
diffusion of water across the cell membrane
sleeping on a textbook and acquiring knowledge
diffusion of glucose across the cell membrane
17
What types of materials are expelled from cells during exocytosis?
water
small molecules such as carbon dioxide
large molecules like proteins
water and glycerol
18
Which term best describes the tails of a phospholipid?
contains two fatty acids and repels water
contains a phosphate group and repels water
contains two fatty acids and attracts water
contains a phosphate group and attracts water
19
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
20
Why does misting fruits and vegetables with water help them look fresh?
plants do not have a rigid cell wall
water cannot move through the cell membrane
plant cells in a hypotonic solution lose water
vacuoles fill with water due to osmosis
21
Which of the following structures serves as the cell's boundary?
channel protein
mitochondria
plasma membrane
chloroplast
22
Which cell membrane structure helps identify the cell?
carbohydrate chain
transmembrane protein
peripheral protein
cholesterol
23
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
24
During diffusion, when the concentration of molecules on both side of the membrane are the same
the molecules will move into the cell
the molecules will stop moving
the molcecules will move out of the cell
the molecules will continue to move in both directions
25
Which of the following is a function of the plasma membrane?
store water, salt, proteins, and carbs
break down lipids, carbs, and proteins
keep the cell wall in place
regulate the movement of material in & out of cell
26
Why is drinking too much water harmful?
cells are in a hypotonic solution and will swell
cells are in a hypertonic solution and will shrink
cells are in a hypotonic solution and will shrink
cells are in a hypertonic solution and will swell
27
Solution B is considered
hypotonic
hypertonic
active transport
isotonic
28
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

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