Transport of gases in alveoli takes place by:

CO is harmful because:
1.  It forms stable compound with hemoglobin
2.  It blocks mitosis
3.  It is mutagenic
4.  It causes defoliation

The exchange of bicarbonates and chloride ions between RBC and plasma is called:

Given below are four diseases:
 

Which one of the above is/are associated with occupational hazards?
1. II only
2. II & III
3. II, III & IV
4. I, II & III

Reason for lung cancer:
1.  Coal mining
2.  Calcium fluoride
3.  Cement factory
4.  Bauxite mining

Blood analysis of a patient reveals an unusually high quantity of carboxy-haemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of:

When CO₂ concentration in blood increases, breathing becomes:

1. There is no effect on breathing

2. Slow and deep

3. Faster and deeper

4. Shallower and slow