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Question

Match the following:
i. Heavy Meromyosin1. Globular head with short armii. Light Meromyosin2. Filamentous actiniii. F actin3. Globular actiniv. G actin4. Tail

A
i-2, ii-3, iii-4, iv-1
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B
i-4, ii-1, iii-3, iv-2
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C
i-1, ii-4, iii-2, iv-3
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D
i-2, ii-1, iii-4, iv-3
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Solution

The correct option is C i-1, ii-4, iii-2, iv-3
Myosin makes up the thick filament and is a polymerised protein. It is made up of meromyosin, a monomeric protein. Meromyosin has 2 parts: a globular head with a short arm, called heavy meromyosin, and a tail, called light meromyosin. The head is an active ATPase enzyme that has binding sites for both ATP and actin filaments.
Actin filament is made up of two filamentous strands that are helically wound together. These are called F actin and are formed from G (globular) actin monomers. Another protein called tropomyosin runs along the length of F actin. At regular intervals, a protein called troponin is present on the tropomyosin..

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