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Q 1/75
Score 0
The movement of molecules from an area of higher concentration to an area of lower concentration is called
30
osmosis
active transport
endocytosis
diffusion
Q 2/75
Score 0
In osmosis, water always moves towards the _______ solution, that is, toward the solution with the _____ solute concentration.
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hypertonic…lesser
hypertonic…greater
hypotonic…greater
isotonic….greater
75 questions
Q.
The movement of molecules from an area of higher concentration to an area of lower concentration is called
1
30 sec
Q.
In osmosis, water always moves towards the _______ solution, that is, toward the solution with the _____ solute concentration.
2
30 sec
Q.
Facilitated diffusion uses energy.
3
30 sec
Q.
Diffusion of water across a selectively permeable membrane is called
4
30 sec
Q.
A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable, allowing water but not the solutes to pass through. What will happen to the cell?
5
30 sec
Q.
Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?
6
30 sec
Q.
The movement of water across a selectively permeable membrane is known as
7
30 sec
Q.
A substance that moves across a cell membrane without using the cell’s energy tends to move
8
30 sec
Q.
Which of the following is an example of ACTIVE TRANSPORT?
9
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Q.
Osmosis uses energy.
10
30 sec
Q.
Which of the following would diffuse through a cell membrane the most easily?
11
30 sec
Q.
A nursing infant is able to obtain disease-fighting antibodies, which are large protein molecules, from its mother’s milk. These molecules probably enter the cells lining the baby’s digestive tract via
12
30 sec
Q.
A freshwater paramecium is placed in salt water. Which of the following events would most likely occur? (Ask yourself where the water in the paramecium is going!!)
13
30 sec
Q.
The molecules responsible for membrane transport are
14
30 sec
Q.
In lab, you use a special balloon that is permeable to water but not sucrose to make an “artificial cell.” The balloon is filled with a solution of 20% sucrose and 80% water and is dropped in a beaker containing a solution of 40% sucrose and 60% water. Which of the following will occur?
15
30 sec
Q.
Sodium, calcium, and potassium would be transported into a cell using which type of transport?
16
30 sec
Q.
The image is depicting what type of solution?
17
30 sec
Q.
The image is depicting what type of solution?
18
30 sec
Q.
The image above is representing what type of solution?
19
30 sec
Q.
What is the main difference between passive transport and active transport?
20
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Q.
Which example(s) of cell transport does not require chemical energy?
21
30 sec
Q.
Endocytosis is an example of what type of transport?
22
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Q.
All of the following are types of passive transport except
23
30 sec
Q.
What is the role of ATP in the process of active transport?
24
30 sec
Q.
Exocytosis is an example of what type of transport?
25
30 sec
Q.
Which of the following is an example of osmosis?
26
30 sec
Q.
How do substances move into or out of the cell through endocytosis?
27
30 sec
Q.
What kind of material is transported through osmosis?
28
30 sec
Q.
In facilitated diffusion, what are the special channels that help substances cross the cell membrane made of?
29
30 sec
Q.
Which statement is true regarding active transport?
30
30 sec
Q.
How does particle size affect a molecule's transport across a cell membrane?
31
30 sec
Q.
Suppose that you stayed in the bathtub too long, causing your hands and feet to look wrinkled. What kind of passive cell transport causes this effect?
32
30 sec
Q.
In general, in what direction does a diffusing substance move?
33
30 sec
Q.
Which best describes the role of exocytosis in cell transport?
34
30 sec
Q.
Chamber A contains 40% helium and Chamber B contains 20% helium. Chambers are connected by a tube the molecules are free to cross. Which of the following will occur?
35
30 sec
Q.
What will happen to an animal cell placed in a salt water solution?
36
30 sec
Q.
An animal cell placed in a hypotonic solution will:
37
30 sec
Q.
Over time what till happen to the circle and dot molecules?
38
30 sec
Q.
The sodium-potassium pump requires energy to move sodium and potassium ions across the cell membrane. Which of these describes the process used by the sodium-potassium pump?
39
30 sec
Q.
What is the function of the proteins in the cell membrane?
40
30 sec
Q.
When active transport is moving molecules, it will allow molecules to move from...
41
30 sec
Q.
Which of the following responses best describes what this image is demonstrating?
42
30 sec
Q.
Water enters a cell when the solution surrounding that cell is...
43
30 sec
Q.
What does it mean to be selectively permeable?
44
30 sec
Q.
How do non-polar substances cross membrane?
45
30 sec
Q.
How do polar substances cross membrane?
46
30 sec
Q.
What is diffusion?
47
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Q.
What is osmosis?
48
30 sec
Q.
What is the hypotonic part of the solution?
49
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Q.
What is the hypertonic part of the solution?
50
30 sec
Q.
What does it mean if a solution is isotonic?
51
30 sec
Q.
The passive transport of an ion through a protein
carrier into a cell represents which of the following?
52
30 sec
Q.
Water constantly moves into the freshwater protistan Paramecium because the cell is _______ relative to its environment.
53
30 sec
Q.
A protistan adapted to life in a freshwater pond is collected in a bottle and transferred to a saltwater bay. Which of the following is likely to happen?
54
30 sec
Q.
A cell is placed in a beaker containing a solution of 40 percent NaCl and 60 percent water. After a few minutes you notice that the cytoplasm of the cell is shrinking in size. The cell is ________ in relation to the contents of the beaker.
55
30 sec
Q.
Because membranes exhibit selective permeability, concentrations of dissolved substances can increase on one side of the membrane or the other.
56
30 sec
Q.
An animal cell placed in a hypertonic solution will swell and perhaps burst.
57
30 sec
Q.
Water tends to move from hypertonic solutions to areas with more solutes.
58
30 sec
Q.
Physiological saline is 0.9 percent NaCl; red blood cells placed in such a solution will not gain or lose water; therefore, one could state that the fluid in red blood cells is hypertonic.
59
30 sec
Q.
A cell engulfs microorganisms, large edible particles, and cellular debris
60
30 sec
Q.
As a result of diffusion, the concentration of many types of substances
61
30 sec
Q.
The dispersal of ink in a beaker of water is an example of
62
30 sec
Q.
Which of the following is not characteristic of facilitated diffusion?
63
30 sec
Q.
Which of the following does not expend energy?
64
30 sec
Q.
By what process do cells transport wastes from within the cell to the external environment?
65
30 sec
Q.
When the concentration of molecules on both sides of a cell membrane is the same, the molecules will:
66
30 sec
Q.
If a cell that was 60% water was placed in a 45% solution of water, what would happen to the cell?
67
30 sec
Q.
When a sea urchin egg is removed from the ocean and placed in freshwater, the egg swells and bursts. What type of solution caused the water to enter the egg?
68
30 sec
Q.
Which of the following is a function of the cell membrane?
69
30 sec
Q.
A cell that is surrounded by fresh water (100 %) will burst because:
70
30 sec
Q.
The cell membrane contains channels and pumps that help move materials from one side to the other, what molecule makes up these channels and pumps?
71
30 sec
Q.
You are conducting osmosis experiments with a test tube of human cells in solution and you add a teaspoon of table salt to the test tube. According to the principles of osmosis, the cells will shrink and shrivel; therefore, the solution is:
72
30 sec
Q.
How would a white blood cell bring a bacteria into the cell?
73
30 sec
Q.
All of the following processes move from high to low concentration except
74
30 sec
Q.
Pinocytosis is only used to bring fluid into the cell.
