Q. The striated appearance of muscle fibers is due to _______________

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Q. All skeletal muscles operate by _______________

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Q. ________ of the sacromere remains unaffected during the muscle contraction.

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Q. The “Sliding filament model of muscle contraction” was proposed in the year ____________

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Q. According to “Sliding filament model of muscle contraction”, shortening of sacromeres results from sliding of the filaments.

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Q. Which of the following proteins are not found in muscle fibres?

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Q. Each tropomyosin is associated with _______ subunits of actin subunits.

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Q. Troponin is composed of _____ subunits.

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Q. Titin is the largest protein discovered till date.

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Q. Which of the following prevents sacromeres from pulling apart during muscle stretching?

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Q. Cortex (of a cell) is located beneath the _____________

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Q. Which type of cytoskeletal elements are involved in nonmuscle motility?

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Q. Nucleation is the slowest step in actin filament formation.

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Q. Which of the following nucleating protein generates unbranched actin filaments?

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Q. Which of the following binds to G-actin?

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Q. Monomer-sequestering proteins are responsible for high concentration of G-actin in nonmuscle cells.

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Q. Tropomodulin is a ___________

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Q. Which of the following has an opposing role as that of thymosin?

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Q. Which of the following can fragment actin filaments?

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Q. Filamin is an example of ___________ proteins.

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