Question 1

The protein that carries oxygen in the red blood cells is:

Accepted Answer

A)  Myoglobin
B)  Hemoglobin
C)  Actin
D)  Iron
E)  InsulinF) C) and D)
G) All of the above

Question 2

Each alveolus of the lung is a small sac with a wall of epithelial tissue that is many layers thick,thereby providing structural support for the air sacs.

Accepted Answer

A) True 
 B)False

Question 3

ATP is required by cells for:

Accepted Answer

A)  DNA replication
B)  Movement
C)  Production of proteins
D)  Growth
E)  All are correctF) A) and D)
G) A) and E)

Question 4

Blood in the pulmonary artery would have ___ oxygen and ___ carbon dioxide than blood in the pulmonary vein?

Accepted Answer

A)  More, less
B)  The same, less
C)  Less, more
D)  More, the same
E)  Less, lessF) B) and D)
G) None of the above

Question 5

Hemoglobin is a(an) _______________ rich pigment that carries oxygen.

Accepted Answer

A)  Calcium
B)  Potassium
C)  Zinc
D)  Phosphorous
E)  IronF) A) and E)
G) All of the above

Question 6

Why is discontinuous breathing only seen in resting insects?

Accepted Answer

A)  Because toxic levels of carbon dioxide can build up in active insects
B)  Because resting insects have more metabolic activity
C)  Because oxygen can build up in active insects
D)  Because oxygen is used as quickly as it arrives in active insects
E)  Because resting insects produce more carbon dioxideF) C) and D)
G) A) and C)

Question 7

The movement of air across the vocal cords in the _____________ produces sounds.

Accepted Answer

A)  Pharynx
B)  Larynx
C)  Trachea
D)  Glottis
E)  UvulaF) A) and B)
G) A) and C)

Question 8

What drives the movement of oxygen from the alveoli into the bloodstream?

Accepted Answer

A)  Active transport against a concentration gradient
B)  Facilitated diffusion down a concentration gradient
C)  Facilitated diffusion against a concentration gradient
D)  Diffusion down a concentration gradient
E)  The heart pumping the oxygen into the bloodstreamF) None of the above
G) A) and B)

Question 9

Air moves into the lungs when the air pressure in the lungs is __________________ than the air pressure outside of the lungs.This occurs when the muscles of the diaphragm _______________.

Accepted Answer

A)  Lower, relax
B)  Lower, contract
C)  Higher, relax
D)  Higher, contractE) A) and B)
F) A) and D)

Question 10

The maximum size of an insect is limited by respiration.Which of the following is the best explanation for this statement?

Accepted Answer

A)  There is not enough oxygen in air to meet an insect's metabolic needs
B)  An insect's lungs are too small for its body size
C)  An insect's heart is too small for its body size
D)  Oxygen cannot diffuse very far through tissues
E)  Insect's do not have enough oxygen transporters to move oxygen through a larger bodyF) A) and B)
G) All of the above

Question 11

Sleep apnea is more common in people who are overweight.Excess fat in the neck compresses the airway,cutting off air flow.The person then wakes up to clear their throat and resumes normal breathing.Which of the following would trigger this reflex?

Accepted Answer

A)  Increased oxygen
B)  Decreased carbon dioxide
C)  Increased carbon dioxide
D)  Decreased oxygen
E)  Decreased nitrogenF) B) and C)
G) A) and E)

Question 12

There are approximately ________________ alveoli in the lungs of an adult human.

Accepted Answer

A)  Fifty million
B)  Five hundred million
C)  Five hundred thousand
D)  Three hundred thousand
E)  Three hundred millionF) C) and E)
G) B) and D)

Question 13

The medulla has receptors that monitor H+ concentrations in the cerebrospinal fluid.

Accepted Answer

A) True 
 B)False

Question 14

The liquid component of blood is referred to as:

Accepted Answer

A)  Lymph
B)  Cytosol
C)  Interstitial fluid
D)  Plasma
E)  Intracellular fluidF) A) and B)
G) B) and D)

Question 15

An increase to 0.5% carbon dioxide in the air (from the normal 0.03%) makes us breathe 10 times faster.Which of the following would limit how long you can hold your breath?

Accepted Answer

A)  Lack of carbon dioxide raises the pH
B)  Lack of oxygen raises the pH
C)  Buildup of carbon dioxide lowers the pH
D)  Build up of oxygen lowers the pH
E)  Build up of nitrogen raises the pHF) A) and B)
G) B) and E)

Question 16

Which of the following is a trend observed in the evolution of lungs in vertebrates?

Accepted Answer

A)  Increased size
B)  The presence of capillaries
C)  Increased surface area
D)  Gain in the ability to absorb oxygen across the skin
E)  Ability to move air into the lungsF) A) and E)
G) B) and D)

Question 17

Asthma attacks can be treated with bronchodilators.Which of the following would happen in a person using such an inhaler?

Accepted Answer

A)  Smooth muscle cells would contract
B)  Smooth muscle cells would relax
C)  The diaphragm would relax
D)  The diaphragm would contract
E)  The alveoli would relaxF) B) and C)
G) C) and E)

Question 18

Where is oxygen used in a eukaryotic cell?

Accepted Answer

A)  Cytoplasm
B)  Nucleus
C)  Plasma membrane
D)  Mitochondria
E)  LysosomeF) A) and D)
G) D) and E)

Question 19

Which main tissue type of the circulatory system enables diffusion across walls of capillaries?

Accepted Answer

A)  Connective
B)  Nervous
C)  Muscle
D)  Vascular
E)  EpithelialF) A) and B)
G) C) and D)

Question 20

Which of the following hypotheses were the researchers testing?

Accepted Answer

A)  Discontinuous breathing protects against too much oxygen
B)  Discontinuous breathing decreases water loss
C)  Discontinuous breathing helps underground insects avoid high levels of carbon dioxide
D)  Discontinuous breathing saves energy by not moving the diaphragm
E)  Discontinuous breathing is harmful because less oxygen is taken upF) A) and D)
G) A) and C)

Exam 30: The Respiratory System

Asthma attacks can be treated with bronchodilators.Which of the following would happen in a person using such an inhaler?

Correct AnswerverifiedShow Answer

Why is discontinuous breathing only seen in resting insects?

Correct AnswerverifiedShow Answer

The movement of air across the vocal cords in the _____________ produces sounds.

Correct AnswerverifiedShow Answer

Hemoglobin is a(an) _______________ rich pigment that carries oxygen.

Correct AnswerverifiedShow Answer

Where is oxygen used in a eukaryotic cell?

Correct AnswerverifiedShow Answer

Which main tissue type of the circulatory system enables diffusion across walls of capillaries?

Correct AnswerverifiedShow Answer

The maximum size of an insect is limited by respiration.Which of the following is the best explanation for this statement?

Correct AnswerverifiedShow Answer

The protein that carries oxygen in the red blood cells is:

Correct AnswerverifiedShow Answer

There are approximately ________________ alveoli in the lungs of an adult human.

Correct AnswerverifiedShow Answer

Each alveolus of the lung is a small sac with a wall of epithelial tissue that is many layers thick,thereby providing structural support for the air sacs.

Correct AnswerverifiedShow Answer

The medulla has receptors that monitor H+ concentrations in the cerebrospinal fluid.

Correct AnswerverifiedShow Answer

The liquid component of blood is referred to as:

Correct AnswerverifiedShow Answer

Air moves into the lungs when the air pressure in the lungs is __________________ than the air pressure outside of the lungs.This occurs when the muscles of the diaphragm _______________.

Correct AnswerverifiedShow Answer

Sleep apnea is more common in people who are overweight.Excess fat in the neck compresses the airway,cutting off air flow.The person then wakes up to clear their throat and resumes normal breathing.Which of the following would trigger this reflex?

Correct AnswerverifiedShow Answer

Which of the following hypotheses were the researchers testing?

Correct AnswerverifiedShow Answer

Which of the following is a trend observed in the evolution of lungs in vertebrates?

Correct AnswerverifiedShow Answer

Blood in the pulmonary artery would have ___ oxygen and ___ carbon dioxide than blood in the pulmonary vein?

Correct AnswerverifiedShow Answer

What drives the movement of oxygen from the alveoli into the bloodstream?

Correct AnswerverifiedShow Answer

ATP is required by cells for:

Correct AnswerverifiedShow Answer

An increase to 0.5% carbon dioxide in the air (from the normal 0.03%) makes us breathe 10 times faster.Which of the following would limit how long you can hold your breath?

Correct AnswerverifiedShow Answer

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The medulla has receptors that monitor H⁺ concentrations in the cerebrospinal fluid.

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Air moves into the lungs when the air pressure in the lungs is ____ than the air pressure outside of the lungs.This occurs when the muscles of the diaphragm _.

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Blood in the pulmonary artery would have _ oxygen and _ carbon dioxide than blood in the pulmonary vein?

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