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
The exchange of bicarbonates and chloride ions between RBC and plasma is called:
1. | Chloride shift | 2. | Bohr's effect |
3. | Haldane's effect | 4. | Intracellular respiration |
Given below are four diseases:
I. | Fluorosis |
II. | Pneumoconiosis |
III. | Silicosis |
IV. | Asthma |
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:
1. | Chloroform | 2. | Carbon dioxide |
3. | Carbon monoxide | 4. | carbon disulphide |
CO is harmful because:
1. It forms stable compound with hemoglobin
2. It blocks mitosis
3. It is mutagenic
4. It causes defoliation
Transport of gases in alveoli takes place by:
1. Active transport | 2. Passive transport |
3. Simple diffusion | 4. None of the above |