Q. No.Which of the following movements can be seen in a human body?
I. Amoeboid
II. Ciliary
III. Flagellar
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 part that does not get shortened in length is labeled as the letter:
| 1. A | 2. B |
| 3. C | 4. D |
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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 |
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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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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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 |
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