Transport of gases in alveoli takes place by:

1. Active transport 2. Passive transport
3. Simple diffusion 4. None of the above
Subtopic:  Respiratory System: Exchange of Gases |
 87%
From NCERT
AIPMT - 1998
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NEET 2025 - Target Batch
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CO is harmful because:
1.  It forms stable compound with hemoglobin
2.  It blocks mitosis
3.  It is mutagenic
4.  It causes defoliation

Subtopic:  Respiratory System: Transport of Gases Part 1 |
 87%
AIPMT - 1998
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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
Subtopic:  Respiratory System: Transport of Gases Part 1 |
 70%
AIPMT - 1999
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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

Subtopic:  Respiratory Disorders: Part 2 |
AIPMT - 1999
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Reason for lung cancer:
1.  Coal mining
2.  Calcium fluoride
3.  Cement factory
4.  Bauxite mining

Subtopic:  Respiratory Disorders: Part 1 |
AIPMT - 2001
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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 

Subtopic:  Respiratory System: Transport of Gases Part 2 |
 78%
AIPMT - 2004
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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 

Subtopic:  Respiratory System: Regulation of Respiration |
 77%
AIPMT - 2004
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