2003896
Question 1
Question
Which substances are produced during respiration?
Answer
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carbon dioxide and water
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water and oxygen
Question 2
Question
Where in the respiratory system does gas exchange occur?
Answer
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in the heart
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in the alveoli
Question 3
Question
The role of the respiratory system is to bring what substance into the body?
Answer
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water
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oxygen
Question 4
Question
The role of the respiratory system is to bring what substance into the body?
Answer
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water
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oxygen
Question 5
Question
The dome-shaped muscle that plays an important role in breathing is the
Answer
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diaphragm
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alveolus
Question 6
Question
What happens to cause air to be exhaled from the lungs?
Answer
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The chest cavity expands and grows larger.
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The diaphragm relaxes and moves upward.
Question 7
Question
Which chemical in tobacco smoke binds to hemoglobin, causing red blood to carry less than their normal load of oxygen?
Answer
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nicotine
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carbon monoxide
Question 8
Question
Which chemical in tobacco smoke is an addictive drug?
Answer
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tar
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nicotine
Question 9
Question
Over time, smoking can irritate the breathing passages, which may become clogged with mucus. This condition is called
Answer
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bronchitis
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emphysema
Question 10
Question
What term do scientists use to describe the chemical process in which oxygen and glucose react to release energy inside body cells?
Answer
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respiration
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breathing
Question 11
Question
Which chemical in tobacco smoke may damage cilia in the respiratory system?
Answer
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tar
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nicotine
Question 12
Question
During gas exchange, which substance moves from the alveoli into the blood?
Answer
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carbon dioxide
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oxygen
Question 13
Question
How can smoking lead to emphysema?
Answer
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by destroying lung tissue
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by slowing the heart rate
Question 14
Question
What is the name of the small flap of tissue that seals off the trachea during swallowing?
Answer
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epiglottis
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larynx
Question 15
Question
Which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the branches of a tree?
Answer
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trachea
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bronchi
Question 16
Question
Hairlike structures that line the nasal cavities and trachea are called
Answer
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Cilia
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mucus
Question 17
Question
Each alveolus is surrounded by a network of
Answer
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arteries
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capillaries
Question 18
Question
What produces a person's voice?
Answer
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the lungs
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the vocal cords
Question 19
Question
The vocal cords stretch across the opening of the
Answer
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diaphragm
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larynx
Question 20
Question
What does nicotine do to the body?
Answer
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It increases blood pressure
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It slows the heartbeat
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