2. When would you find antibodies being produced? a.)between 3 and 7 days b.)bet

Question

2. When would you find antibodies being produced?

a.)between 3 and 7 days
b.)between 14 and 21 days
c.)between 28 and 35 days
d.)14-21 and 42-56 days
e.)between 3 and 7 days and between 28 and 35 days

3. When would memory cells be produced?

a.)between 35 and 42 days
b.)between 7 and 14 days
c.)between 28 and 35 days
d.)between 0 and 7 days
e.)between 0 and 7 days and between 28 and 35 days

Use the following information to answer the next question.

Atmospheric pressure at sea level is equal to a column of 760 mm Hg.
Oxygen makes up 21% of the atmosphere by volume.


4. If the partial pressure of CO2 at sea level is approximately 0.23 mm Hg, how does this influence gas exchange in terrestrial animals?

a.)the lower pressure of oxygen causes the lung surface to extract oxygen and give up carbon dioxide

b.) the low concentration of carbon dioxide causes the oxygen to move across the lung surface

c.)the low concentration of carbon dioxide causes the carbon dioxide to exert pressure on the inner lung surface

d.)since the concentration of oxygen is lower in water, the moist surface of the lung extracts less carbon dioxide

e.)the higher pressure of oxygen causes the lung surface to extract oxygen and give up carbon dioxide

Explanation / Answer

1.a.)between 7 and 14 days 2.e.)between 3 and 7 days and between 28 and 35 days 3.e.)between 0 and 7 days and between 28 and 35 days

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