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Q. No.Binding of oxygen with hemoglobin is primarily related to:
1. Partial pressure of carbon dioxide
2. Hydrogen ion concentration
3. Temperature
4. Partial pressure of oxygen
Subtopic: Â Respiratory System: Transport of Gases |
 87%
Level 1: 80%+
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Identify the incorrect statement:
| 1. | Our lungs remove 5 mL carbon dioxide per minute per 100 mL of blood |
| 2. | On an average, 25 to 30 grams of urea is excreted out per day |
| 3. | An adult human excretes on an average 1 to 1.5 liters of urine per day |
| 4. | Approximately 1 million nephrons are present in each kidney |
Subtopic: Â Respiratory System: Transport of Gases |
 91%
Level 1: 80%+
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Consider the given two statements:
| Statement I: | The primary drive for breathing at rest is the concentration of oxygen in the blood rather than the concentration of carbon dioxide. |
| Statement II: | Carbon dioxide and hydrogen ion concentration have no effect on central chemoreceptors in the brain. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Respiratory System: Exchange of Gases |
 62%
Level 2: 60%+
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Residual volume in lungs:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Prevents Lung Collapse |
| II: | Facilitates Gas Exchange |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Respiratory System: Pulmonary Volumes & Capacities |
Level 3: 35%-60%
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Match the following locations with their typical partial pressure of oxygen (pO2):
Codes:
| Column-I | Column-II | ||
| A. | Alveoli | P. | 104 mm Hg |
| B. | Arterial Blood | Q. | 40 mm Hg |
| C. | Venous Blood | R. | 95 mm Hg |
| D. | Atmospheric Air | S. | 159 mm Hg |
| A | B | C | D | |
| 1. | R | P | S | Q |
| 2. | P | R | Q | S |
| 3. | P | Q | R | S |
| 4. | Q | P | S | R |
Subtopic: Â Respiratory System: Exchange of Gases |
 84%
Level 1: 80%+
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Consider the given two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The contraction of diaphragm brings about inhalation. |
| II: | The contraction of external intercostals bring about exhalation. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Mechanism of Breathing |
 83%
Level 1: 80%+
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| Assertion (A): | Steroids are very important in the management of bronchial asthma. |
| Reason (R): | Bronchial asthma is an inflammatory disorder. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False and (R) is True. |
Subtopic: Â Respiratory Disorders: Part 1 |
 55%
Level 3: 35%-60%
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From the given statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | About 97 per cent of O2 is transported by RBCs in the blood. |
| II: | Nearly 20-25 per cent of CO2 is transported by RBCs. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Respiratory System: Transport of Gases |
 92%
Level 1: 80%+
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Where is the pneumotaxic center located in the human brain?
1. Medulla oblongata
2. Hypothalamus
3. Cerebrum
4. Pons
1. Medulla oblongata
2. Hypothalamus
3. Cerebrum
4. Pons
Subtopic: Â Respiratory System: Regulation of Respiration |
 93%
Level 1: 80%+
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Each haemoglobin molecule can carry a maximum of:
1. four atoms of oxygen
2. two molecules of oxygen
3. four molecules of oxygen
4. one atom of oxygen
1. four atoms of oxygen
2. two molecules of oxygen
3. four molecules of oxygen
4. one atom of oxygen
Subtopic: Â Respiratory System: Transport of Gases |
 83%
Level 1: 80%+
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