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Muscle energy McQ
1. Light band has which of the following filament protein?
a) Actin
b) Myosin
c) Actin and myosin
d) None of these
View Answer
Answer: a
Explanation: Light band has actin because it is a part of thin filament.
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2. Contractile protein of a muscle is
a) Troponin
b) Myosin
c) Tubulin
d) Tropomyosin
View Answer
Answer: b
Explanation: Both actin and myosin are the two contractile proteins.
3. Which of the following contractile protein of skeletal muscle involve in ATPase activity?
a) Troponin
, b) Myosin
c) Tubulin
d) Tropomyosin
View Answer
Answer: b
Explanation: ATPase activity involves conversion of ATP to ADP which releases energy. Myosin involves
in such type of activity.
4. The cross bridges involved in muscle contraction are located on the
a) Myosin myofilaments
b) Actin myofilaments
c) Tropomyosin
d) Dystrophin
View Answer
Answer: a
Explanation: The globular head of a myosin that projects from myosin filament is a cross bridge.
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
View Answer
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