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Locomotion and Movement

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12
Briefly describe the structure of meromyosin.

Meromyosin is made up of two parts

i. A globular head with a short arm - It is called the heavy meromyosin (HMM). The head and short arm projects outwards at regular distance and angle from each other from the surface of a polymerised myosin filament and is known as cross arm. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.

ii A tail. is  the light meromyosin (LMM).

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What is the rib cage made of ?

The thoracic vertebrae, ribs and sternum together form the rib cage.
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Which pairs are called false ribs?

8th, 9th and 10th pairs of ribs are called as false ribs or vertebrondral ribs.
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What is gout ?

Gout is the inflammation of joints due to accumulation of uric acid crystals.
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how many pairs of floating ribs are present in humns?

2
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Total number of pair of ribs?

12
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