Respiration: Question Preview (ID: 6133)

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Which substances are produced during respiration?
a) water and oxygen
b) carbon dioxide and red blood cells
c) carbon dioxide and water
d) oxygen and red blood cells

Where in the respiratory system does gas exchange occur?
a) in the heart
b) in the trachea
c) in the pharynx
d) in the alveoli

The role of the respiratory system is to bring what substance into the body?
a) water
b) red blood cells
c) carbon dioxide
d) oxygen

During gas exchange, which substances move from the alveoli into the blood?
a) carbon dioxide
b) nitrogen
c) water
d) oxygen

The dome-shaped muscle that plays a role in breathing is the
a) diaphragm
b) bronchus
c) larynx
d) alveolus

What happens to cause air to be exhaled from the lungs?
a) The rib muscles contract and move outward
b) The lungs contract and then expand
c) The diaphragm relaxes and moves upward
d) The chest cavity expands and grows larger

Which chemical in tobacco smoke binds to hemoglobin ?
a) tar
b) carbon monoxide
c) nitrogen
d) nicotine

Which chemical in tobacco smoke is an addictive drug?
a) tar
b) carbon monoxide
c) nitrogen
d) nicotine

Name the condition in which smoking can irritate the breathing passages.
a) bronchitis
b) heart attacks
c) lung cancer
d) emphysema

Each alveolus is surrounded by a network of
a) cilia
b) capillaries
c) arteries
d) veins

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