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Q. No.Consider the given two statements:
Assertion (A):
Myasthenia gravis is characterized by muscle fatigue and weakness.
Reason (R):
It is caused by a hyper response of immune system to a viral infection
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: Disorders of Muscular and Skeletal System |
78%
From NCERT
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Consider the given two statements:
| Assertion (A): | Skeletal muscles are striated and voluntary. |
| Reason (R): | They are controlled by the autonomic nervous system. |
| 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: Skeletal Muscle: Basic Anatomy |
80%
From NCERT
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Consider the given two statements:
| Assertion (A): | Smooth muscles are voluntary muscles. |
| Reason (R): | They are under conscious control and allow for purposeful movements |
| 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. | Both (A) and (R) are False. |
Subtopic: Skeletal Muscle: Basic Anatomy |
91%
From NCERT
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Match the number with the corresponding vertebrae:
Codes:
| Column I | Column II | ||
| A. | Cervical | P. | 5 |
| B. | Thoracic | Q. | 7 |
| C. | Lumbar | R. | 12 |
Codes:
| A | B | C | |
| 1. | P | Q | R |
| 2. | Q | P | R |
| 3. | Q | R | P |
| 4. | R | Q | P |
Subtopic: Vertebral column |
88%
From NCERT
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What is a key difference between red muscle fibers and white muscle fibers?
| 1. | Red muscle fibers are adapted for endurance and have a high myoglobin content, while white muscle fibers are designed for short bursts of activity and contain less myoglobin. |
| 2. | White muscle fibers are rich in myoglobin, whereas red muscle fibers are not. |
| 3. | Red muscle fibers are smaller in diameter than white muscle fibers. |
| 4. | White muscle fibers have more mitochondria than red muscle fibers. |
Subtopic: Skeletal Muscle: Myofilaments |
95%
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| Assertion(A): | Red muscle fibres are adapted to sudden outburst of muscular activity. |
| Reason(R): | Red muscle fibres are extremely rich in sarcoplasmic reticulum. |
| 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 False. |
Subtopic: Muscle Contraction: Other Considerations |
From NCERT
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What type of synovial joint is present between atlas and axis bones in human vertebral column?
1. Pivot
2. Condyloid
3. Gliding
4. Saddle
1. Pivot
2. Condyloid
3. Gliding
4. Saddle
Subtopic: Synovial Joint |
90%
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Which of the following bones will not be a part of the facial skeleton of human skull?
| 1. | Ethmoid | 2. | Zygomatic |
| 3. | Mandible | 4. | Maxilla |
Subtopic: Axial Skeleton: I |
74%
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Which of the following bones will not be a part of the cranial skeleton of human skull?
| 1. | Temporal | 2. | Zygomatic |
| 3. | Parietal | 4. | Occipital |
Subtopic: Axial Skeleton: I |
80%
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The head of the myosin myofilament has sites for:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | binding to active sites on actin myofilaments |
| II: | binding to ADP |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Skeletal Muscle: Myofilaments |
70%
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