Q. No.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
The incorrect statements are:
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
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During muscle contraction, the length of which of the following remains the same?
1. I-Band
2. H-Zone
3. Sarcomere
4. A-Band
Accumulation of uric acid in joints will lead to:
| 1. | Rheumatoid arthritis | 2. | Osteoarthritis |
| 3. | Osteomalacia | 4. | Gouty arthritis |
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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 |
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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 |
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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 |
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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 |
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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 |
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