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Q. No.During muscle contraction, the part that does not get shortened in length is labeled as the letter:
1. A
2. B
3. C
4. D
Subtopic: Excitation Contraction Coupling I | Excitation Contraction Coupling II |
69%
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Consider the following statements:
| I: | The head of myosin is made of LMM and the tail is made of HMM |
| II: | F Actin is monomeric while G actin is polymeric |
| III: | Tropomyosin is composed of three globular proteins |
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
Subtopic: Skeletal Muscle: Myofilaments |
61%
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Subtopic: Axial Skeleton: I | Axial Skeleton: II |
76%
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As the distance from Z line to Z line decreases, which bands shorten in a sarcomere?
| 1. | the I band and H band | 2. | the I band and A band |
| 3. | the A band and H band | 4. | all bands shorten |
Subtopic: Sliding Filament Theory |
88%
From NCERT
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The joint between atlas and axis vertebra is classified as:
| 1. | Saddle joint | 2. | Pivot joint |
| 3. | Gliding joint | 4. | Hinge joint |
Subtopic: Synovial Joint |
92%
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The dark and light bands seen as striations in a skeletal muscle are located on:
| 1. | Myofilaments | 2. | Muscle fiber |
| 3. | Myofibril | 4. | Motor unit |
Subtopic: Skeletal Muscle: Sarcomere |
54%
From NCERT
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All the following regarding red muscle fibers are true except:
| 1. | They are adapted for slow and sustained activity |
| 2. | They have a high content of myoglobin |
| 3. | They are rich in mitochondria |
| 4. | They depend on anaerobic process for energy |
Subtopic: Muscle Contraction: Other Considerations |
85%
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A flat bone present on the ventral midline of thorax is called as:
| 1. | Hyoid | 2. | Clavicle |
| 3. | Sternum | 4. | Vertebral body |
Subtopic: Axial Skeleton: I | Axial Skeleton: II |
92%
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The central part of the thick filaments not overlapped by the thin filaments is called as:
| 1. | A band | 2. | I band |
| 3. | H zone | 4. | Sarcomere |
Subtopic: Skeletal Muscle: Sarcomere |
88%
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What protein is arranged along the length of actin filaments and is involved in regulation of skeletal muscle contraction?
| 1. | Troponin | 2. | Calmodulin |
| 3. | Tropomyosin | 4. | Light meromyosin |
Subtopic: Sliding Filament Theory |
64%
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