Biochemistry Questions and Answers – Protein Interactions Modulated by Chemical Energy: Actin, Myosin and Molecular Motors

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Protein Interactions Modulated by Chemical Energy: Actin, Myosin and Molecular Motors”.

1. Light band has which of the following filament protein?
a) Actin
b) Myosin
c) Actin and myosin
d) Tubulin
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2. Contractile protein of a muscle is __________
a) Troponin
b) Myosin
c) Tubulin
d) Tropomyosin
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3. Which of the following contractile protein of skeletal muscle involve in ATPase activity?
a) Troponin
b) Myosin
c) Tubulin
d) Tropomyosin
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4. The cross bridges involved in muscle contraction are located on the __________
a) Myosin myofilaments
b) Actin myofilaments
c) Tropomyosin
d) Dystrophin
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5. The contractile unit consisting of bundles of thick filaments interleaved at either end with those of thin filaments is?
a) Myofibril
b) Cross bridges
c) Z band
d) Sarcomere
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6. Sarcomere is a part between __________
a) 2 I bands
b) 2 Z bands
c) 2 A bands
d) 2 H bands
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7. Which of the following is the smallest division?
a) Actin
b) Fiber
c) Fibril
d) Filament
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8. Which of the following is false?
a) Actin is a thin filament
b) Myosin is a thick filament
c) The band in a myofibril is an area of thin filament
d) Functional unit of muscle is sarcomere
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9. The connective tissue that surrounds individual fibers is __________
a) Fascia
b) Epimysium
c) Endomysium
d) Perimysium
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10. Which of the following is an invagination of the muscle cell’s sarcolemma?
a) Cisternae
b) Microtubules
c) T tubules
d) Sarcoplasmic reticula
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Sanfoundry Global Education & Learning Series – Biochemistry.

To practice all areas of Biochemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.