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Q. No.What is the maximum number of oxygen molecules that a molecule of haemoglobin can carry?
1.
2
2.
4
3.
6
4.
8
Subtopic: Respiratory System: Transport of Gases |
94%
Level 1: 80%+
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The maximum volume of air a person can breathe out after a forced inspiration is called as:
| 1. | Functional residual capacity | 2. | Vital capacity |
| 3. | Expiratory reserve volume | 4. | Residual volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
71%
Level 2: 60%+
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Inflammation of bronchi and bronchioles leading to difficulty in breathing is characteristically seen in:
| 1. | Bronchial asthma | 2. | Emphysema |
| 3. | Tuberculosis | 4. | Pneumonia |
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
86%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | The amount of CO2 that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of O2. |
| Reason (R): | Haemoglobin does not play any role in the transport of carbon dioxide in human blood. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Respiratory System: Exchange of Gases |
85%
Level 1: 80%+
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Contraction of diaphragm:
| 1. | increases the diameter of thorax in dorso-ventral axis and brings about inhalation |
| 2. | decreases the diameter of thorax in dorso-ventral axis and brings about exhalation |
| 3. | increases the diameter of thorax in antero-posterior axis and brings about inhalation |
| 4. | decreases the diameter of thorax in antero-posterior axis and brings about exhalation |
Subtopic: Respiratory System: Pulmonary Ventilation |
77%
Level 2: 60%+
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Favourable conditions for the oxygenation of haemoglobin at alveoli include all the following except:
1. High pO2
2. Low pCO2
3. Low pH
4. Low temperature
Subtopic: Respiratory System: Transport of Gases |
80%
Level 1: 80%+
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Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
| Statement I: | Humans breathe by negative pressure. |
| Statement II: | The respiratory center is directly affected by low oxygen levels. |
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Respiratory System: Pulmonary Ventilation |
69%
Level 2: 60%+
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Consider the given two statements:
| Assertion: | It is important that the anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the pulmonary cavity. |
| Reason: | We cannot directly alter the pulmonary volume. |
| 1. | Assertion is true but Reason is false |
| 2. | Both Assertion and Reason are true and the Reason correctly explains the Assertion |
| 3. | Both Assertion and Reason are true but the Reason does not correctly explain the Assertion |
| 4. | Assertion is false but Reason is true |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
71%
Level 2: 60%+
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Regarding the transport of oxygen and carbon dioxide in the human blood:
I: In the alveoli, where there is high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.
II: When the pCO2 is low and pO2 is high, more binding of carbon dioxide to haemoglobin occurs.
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: In the alveoli, where there is high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.
II: When the pCO2 is low and pO2 is high, more binding of carbon dioxide to haemoglobin occurs.
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: Respiratory System: Transport of Gases |
79%
Level 2: 60%+
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Vital capacity of lung is
| 1. | IRV + ERV + TV | 2. | IRV + ERV |
| 3. | IRV + ERV + TV + RV | 4. | IRV + ERV + TV - RV |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
81%
Level 1: 80%+
NEET - 2023
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