Question : The contractile proteins in a muscle are
Option 1: Actin and Myosin
Option 2: Actin and Tropomyosin
Option 3: Myosin and Troponin
Option 4: Troponin and Tropomyosin
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Correct Answer: Actin and Myosin
Solution : The correct option is - Actin and myosin.
The contractile proteins in a muscle refer primarily to two types of proteins: actin and myosin. Actin is a globular protein that forms thin filaments in muscle fibers. These filaments are involved in muscle contraction by sliding over myosin filaments. Actin is also important in various cellular processes like cell division, cell motility, and the maintenance of cell shape. Myosin is a motor protein that makes up the thick filaments in muscle fibers. It plays a central role in muscle contraction. Myosin molecules have a head region that can bind to actin, and a tail region that interacts with other myosin molecules to form the thick filament.
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