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Q. No.Read the following statements and choose the correct option:
A.
All the terrestrial vertebrates are air-breathers.
B.
They have developed lungs for breathing, an adaption for land life.
1. Statement A is correct and Statement B is incorrect
2. Statement A is incorrect and Statement B is correct
3. Both Statement A and Statement B are correct
4. Both Statement A and Statement B are incorrect
Subtopic: Â Respiratory Organs |
 78%
Level 2: 60%+
Hints
Read the following statements:
How many of the above statements are correct?
| i. | The approximate ratio of residual volume and total lung capacity is 1 : 5 |
| ii. | Haldane effect describes the dissociation of CO2 from Hb and facilitates its release into alveoli due to oxygenation of Hb |
| iii. | Maximum CO2 is carried in the blood as NaHCO3 |
| iv. | When a plain dweller move to high altitudes (3,500 m or more), he/she will have increase in RBC production and decreased breathing rate |
| v. | Under certain conditions, the P50 value of Hb rises, due to this the affinity of Hb of combining with O2 rises. |
How many of the above statements are correct?
| 1. | Two | 2. | Three |
| 3. | One | 4. | Four |
Subtopic: Â Respiratory System: Pulmonary Volumes & Capacities |Â Respiratory System: Exchange of Gases |Â Respiratory System: Transport of Gases Part 1 |Â Respiratory System: Transport of Gases Part 2 |Â Respiratory System: Transport of Gases |
Level 4: Below 35%
Hints
| Assertion (A): | Sound is produced by larynx. |
| Reason (R): | Larynx is a made up of cartilaginous box which surrounds a pair of vocal cords. |
| 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, but (R) is true. |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 76%
Level 2: 60%+
Hints
Consider the given two statements
| Assertion (A): | Oxygen has to be continuously provided to the cells and CO2 has to be released from the cell. |
| Reason (R): | CO2 is produced as a result of catabolic reactions in a cell. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explains (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Â Respiratory System: Exchange of Gases |
 57%
Level 3: 35%-60%
Hints
| Assertion (A): | The thickness of the diffusion membrane is nearby a centimeter. |
| Reason (R): | The thickness of the diffusion membrane facilitates gaseous exchange. |
| 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, but (R) is true. |
Subtopic: Â Respiratory System: Exchange of Gases |
 82%
Level 1: 80%+
Hints
Which of the following is true for Bohr effect?
| 1. | All the factors that shift the oxygen haemoglobin dissociation curve to the right increase Bohr effect |
| 2. | The overall result of Bohr effect is to allow greater O2 transport from lungs to tissues |
| 3. | Increase in CO2 concentration in the blood results in increased dissociation of oxyhaemoglobin |
| 4. | More than one option is correct |
Subtopic: Â Respiratory System: Transport of Gases Part 1 |Â Respiratory System: Transport of Gases Part 2 |Â Respiratory System: Transport of Gases |
 76%
Level 2: 60%+
Hints
Read the following statements and choose the correct option :
A. Bacteria that reach the lungs, rarely survive.
B. Alveoli of normal lungs are lined by a film of lecithin which kills bacteria.
1. Statement A is correct and B incorrect
2. Statement B is correct and A incorrect
3. Both the statements are correct
4. Both the statements are incorrect
A. Bacteria that reach the lungs, rarely survive.
B. Alveoli of normal lungs are lined by a film of lecithin which kills bacteria.
1. Statement A is correct and B incorrect
2. Statement B is correct and A incorrect
3. Both the statements are correct
4. Both the statements are incorrect
Subtopic: Â Respiratory System: Upper Respiratory Tract |Â Respiratory System: Trachea & Basic Anatomy of Lung |
Level 3: 35%-60%
Hints
Match the columns:
1. A = iii, B = iv, C = ii, D = ii
2. A = iv, B = iii, C - i, D = ii
3. A = iv, B = iii, C = ii, D = i
4. A = i, B = ii, C = iv, D = iii
| Column - I | Column - II |
| A. Carboxyhaemoglobin | i. O2 |
| B. Carbaminohaemoglobin | ii. NO-3 |
| C. Methaemoglobin | iii. CO2 |
| D. Oxyhaemoglobin | iv. CO |
1. A = iii, B = iv, C = ii, D = ii
2. A = iv, B = iii, C - i, D = ii
3. A = iv, B = iii, C = ii, D = i
4. A = i, B = ii, C = iv, D = iii
Subtopic: Â Respiratory System: Transport of Gases Part 1 |Â Respiratory System: Transport of Gases Part 2 |Â Respiratory System: Transport of Gases |
 86%
Level 1: 80%+
Hints
A large proportion of oxygen is let unused in the human is left unused in the human blood even after its uptake by the body tissues. This O2 :
| 1. | Helps in releasing more O2 to the epithelial tissues |
| 2. | Is enough to keep oxyhaemoglobin saturation at 96% |
| 3. | Raises pCO2 of blood to 75 mm Hg |
| 4. | Acts as a reserve during muscular exercise |
Subtopic: Â Respiratory System: Exchange of Gases |Â Respiratory System: Transport of Gases Part 1 |
 79%
Level 2: 60%+
Hints
When we breath in, we inhale many gases, including oxygen. What happens to the gases that the body cannot use?
| 1. | They are absorbed into the digestive system and used to create energy |
| 2. | They circulate through the body and are disposed off later |
| 3. | They are changed into oxygen by the lungs |
| 4. | They are exhaled |
Subtopic: Â Respiratory System: Exchange of Gases |
 66%
Level 2: 60%+
Hints
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