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Q. No.
Assertion (A): RBCs contain a red-colored complex protein called hemoglobin.
Reason (R): RBCs are devoid of nucleus in most of the mammals and are biconcave in shape.
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 Blood: General Description & RBC |
 87%
Level 1: 80%+
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Assertion (A): 'O' group individuals are called universal donors.
Reason (R): Group 'O' blood can be donated to persons with any other blood group.
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.
Reason (R): Group 'O' blood can be donated to persons with any other blood group.
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 Blood: Blood Group (A,B,O) |
 87%
Level 1: 80%+
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Assertion (A): Nearly 20% of humans have Rh antigens.
Reason (R): Rh antigen is named after Rhesus monkeys.
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.
Reason (R): Rh antigen is named after Rhesus monkeys.
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 Blood: Blood Group |
 84%
Level 1: 80%+
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Assertion (A): Birds and Mammals have double circulation.
Reason (R): Two separate circulatory pathways are present in birds and mammals where the mixing of oxygenated and deoxygenated blood occurs.
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.
Reason (R): Two separate circulatory pathways are present in birds and mammals where the mixing of oxygenated and deoxygenated blood occurs.
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 Human Heart: Double Circulation |
 84%
Level 1: 80%+
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Assertion (A): ECG is of great clinical significance.
Reason (R): It helps to diagnose possible abnormalities/diseases of the heart.
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.
Reason (R): It helps to diagnose possible abnormalities/diseases of the heart.
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 ECG & Coronary Artery Disease |
 94%
Level 1: 80%+
Hints
Assertion (A): Human heart is myogenic.
Reason (R): Normal activities of the heart are regulated by the human brain.
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.
Reason (R): Normal activities of the heart are regulated by the human brain.
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 Regulation of Cardiac Activity |
 73%
Level 2: 60%+
Hints
Assertion (A): SAN is called the pacemaker of the heart.
Reason (R): It generates the maximum number of action potentials and hence, it sets the pace of heart beat.
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.
Reason (R): It generates the maximum number of action potentials and hence, it sets the pace of heart beat.
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 Rhythmic Excitation of Human Heart: Part 1 |
 95%
Level 1: 80%+
Hints
Assertion (A): Heart failure is sometimes called congestive heart failure.
Reason (R): Congestion of the lungs is one of the main symptoms of this disease.
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.
Reason (R): Congestion of the lungs is one of the main symptoms of this disease.
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 DISORDERS OF CIRCULATORY SYSTEM |
 89%
Level 1: 80%+
Hints
Assertion (A): The heart rate of an individual can be determined by counting the number of QRS complexes.
Reason (R): The ECGs obtained from different healthy individuals have roughly the same shape for a given lead configuration.
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.
Reason (R): The ECGs obtained from different healthy individuals have roughly the same shape for a given lead configuration.
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 ECG & Coronary Artery Disease |
 71%
Level 2: 60%+
Hints
Assertion (A): Cells need nutrients, O2, essential substances, and also the removal of harmful substances for healthy functioning.
Reason (R): It is essential to have efficient mechanisms for the movement of these substances to the cells and from the cells.
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.
Reason (R): It is essential to have efficient mechanisms for the movement of these substances to the cells and from the cells.
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 Blood: General Description & RBC |
 54%
Level 3: 35%-60%
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