Question

1. Hemoglobin has how many subunits? a. 1 b. 2 c. 3 d. 4 2. CO2...

1. Hemoglobin has how many subunits?
a. 1
b. 2
c. 3
d. 4

2. CO2 is
a. less soluble than oxygen
b. slightly more soluble than oxygen
c. twenty times more soluble than oxygen
d. none of the above

3. The pO2 of arterial blood is
a. 100 mmHg
b. 40 mmHg
c. 180 mmHg
d. 45 mmHg

4. If ventilation is halved then Pco2 is
a. doubled
b. Tripled
c. unchanged
d. none of the above

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Homework Answers

Answer #1

1). The answer is option d that is 4 .

The haemoglobin has 4 subunits that are 2 alpha and 2 beta.

2). The answer is option c that is twenty times more soluble than oxygen.

This solubility is according to Henry's law in which the number of molecules in solution is proportional to partial pressure at liquid surface.

The carbon dioxide has more number of molecules than oxygen.

3). The answer is option a that is 100 mmHg.

4). The answer is a that is doubled . This is done for expelling the carbon dioxide at the same rate as of normal ventilation.

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