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1
Aquatic animals extract oxygen dissolved in water by trachea or gills while terrestrial animals use direct diffusion or lungs.
A)True
B)False
2
The most efficient respiratory machines that have ever evolved among organisms are the
A)gills of bony fish.
B)lungs of humans.
C)skin of amphibians.
D)trachea of grasshoppers.
3
A fish out of water will suffocate due to lack of oxygen.
A)True
B)False
4
Vertebrates that rely on their skin as well as their lungs for respiration are
A)reptiles.
B)fish.
C)amphibians.
D)mammals.
5
_____________ lungs are the most efficient atmospheric respiratory machines.
A)Bird
B)Mammal
C)Reptile
D)Amphibian
6
A mammal's lungs are located in its abdominal cavity.
A)True
B)False
7
The active pumping of air in and out through the lungs is called
A)inhalation.
B)breathing.
C)exhalation.
D)cellular respiration.
8
Air is drawn into the lungs by the creation of negative pressure.
A)True
B)False
9
Oxygen moves within the circulatory system carried piggyback on
A)red blood cells.
B)white blood cells.
C)hemoglobin.
D)platelets.
10
Hemoglobin molecules carry which of the following gases?
A)O2 (oxygen gas)
B)CO2 (carbon dioxide gas)
C)NO (nitric oxide)
D)All of the above
11
Most of the carbon dioxide moves through the blood by which of the following?
A)By binding to hemoglobin
B)By dissolving in the cytoplasm of red blood cells
C)By dissolving in the plasma of the blood
D)By binding to red blood cells
12
Cigarette smoke contains powerful mutagens that cause lung cancer.
A)True
B)False
13
Mammals have less metabolic demands for oxygen than do reptiles.
A)True
B)False
14
The location where gas exchange occurs in the mammalian lung is the
A)bronchus.
B)trachea.
C)diaphragm.
D)alveoli.
15
Premature babies sometimes suffer from respiratory distress because their lungs are too small.
A)True
B)False
16
The air that remains in the lungs after a maximal expiration is the
A)tidal volume.
B)vital capacity.
C)residual volume.
D)lung volume.
17
The respiratory efficiency of mammalian lungs is very near maximal.
A)True
B)False
18
The incidence of cancer per 1,000 people is uniform throughout the U.S.
A)True
B)False
19
All animals obtain energy by the process of oxidative metabolism, which requires a steady supply of oxygen.
A)True
B)False
20
Which of the following are used in respiration?
A)Skin
B)Spiracles
C)Gills
D)All of the above





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