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# Biology 2015

## Educators

MB
TG
+ 7 more educators

### Problem 1

Label the following diagram depicting respiration in terrestrial vertebrates.

Bruce M.

### Problem 2

Birds have more efficient lungs than humans because the flow of air in birds
a. is the same during both inspiration and expiration.
b. travels in only one direction through the lungs.
c. follows a tidal ventilation pattern.
d. is not hindered by a larynx.
e. enters their bones.

Bryan L.

### Problem 3

If the digestive and respiratory tracts were completely separate in humans, there would be no need for
a. swallowing.
b. a nose.
c. an epiglottis.
d. a diaphragm.
e. All of these are correct

Stephanie S.

### Problem 4

Which of these is a true statement?
a. In lung capillaries, carbon dioxide combines with water to produce carbonic acid.
b. In tissue capillaries, carbonic acid breaks down to carbon dioxide and water.
c. In lung capillaries, carbonic acid breaks down to carbon dioxide and water.
d. In tissue capillaries, carbonic acid combines with hydrogen ions to form the carbonate ion.
e. All of these statements are true

Bryan L.

### Problem 5

reinforced tube that connects larynx with bronchi
a. bronchi d. larynx
b. bronchioles e. pharynx
c. glottis f. trachea

Christina S.

### Problem 6

opening into larynx
a. bronchi d. larynx
b. bronchioles e. pharynx
c. glottis f. trachea

Bryan L.

### Problem 7

divisions of air tubes that enter lungs
$\begin{array}{ll}{\text { a. bronchi }} & {\text { d. larynx }} \\ {\text { b. bronchioles }} & {\text { e. pharynx }} \\ {\text { c. glottis }} & {\text { f. trachea }}\end{array}$

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### Problem 8

Which of these is incorrect concerning inspiration?
a. The rib cage moves up and out.
b. The diaphragm contracts and moves down.
c. As pressure in lungs decreases, air comes rushing in.
d. The lungs expand because air comes rushing in.

Bryan L.

### Problem 9

In humans, the respiratory control center
a. is stimulated by carbon dioxide.
b. is located in the medulla oblongata.
c. controls the rate of breathing.
d. is stimulated by hydrogen ion concentration.
e. All of these are correct.

Aneri S.

### Problem 10

Air enters the human lungs because
a. atmospheric pressure is less than the pressure inside the lungs.
b. atmospheric pressure is greater than the pressure inside the lungs.
c. although the pressures are the same inside and outside, the partial pressure of oxygen is lower within the lungs.
d. the residual air in the lungs causes the partial pressure of oxygen to be less than it is outside.
e. the process of breathing pushes air into the lungs.

Bryan L.

### Problem 11

Carbon dioxide is carried in the plasma
a. in combination with hemoglobin.
b. as the bicarbonate ion.
c. combined with carbonic anhydrase.
d. only as a part of interstitial fluid.
e. All of these are correct.

Susanna T.

### Problem 12

The chemical reaction that converts carbon dioxide to a bicarbonate ion takes place in
a. the blood plasma.
b. red blood cells.
c. the alveolus.
d. the hemoglobin molecule.

Bryan L.

### Problem 13

It is difficult to develop immunity to the common cold because
a. antibodies don’t work against cold viruses.
b. bacteria that cause colds are resistant to antibiotics.
c. colds can be caused by hundreds of viral strains.
d. common cold viruses cause severe immunosuppression.

Marcelo M.

### Problem 14

The first action that should be taken when someone is choking on food is to perform
a. a tracheostomy.
b. CPR.
c. the Heimlich maneuver.
d. X-rays to determine where the food is lodged.

Bryan L.

### Problem 15

Asthma
a. mainly affects the upper respiratory tract.
b. is usually caused by an infection.
c. is considered to be a genetic disorder.
d. is usually curable.
e. None of these statements are true.

HC
Hannah C.

### Problem 16

Pulmonary tuberculosis is caused by a
a. bacterium.
b. fungus.
c. protist.
d. virus.

Bryan L.