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Smallest unit of muscle is
Options
(a) sarcomere
(b) sarcoplasm
(c) muscle fibril
(d) entire muscle
Correct Answer:
sarcomere
Explanation:
Sarcomere is the functional unit of myofibril. It is the part of myofibril between two successive Z-lines, which consists of two I-band halves, and an A-band between them. The region contains a bundle of two types of protein filaments, actin and myosin. Upon contraction, the actin filaments slide towards the centre of the myosin filaments, and overall sarcomere length get smaller.
Related Questions: - Plant cells differ from animal cells in having
- Clamp connection is found in
- Enzyme helping in oxidative decarboxylation of pyruvic acid is
- Light reaction in photosynthesis occurs in
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Topics: Locomotion and Movement
(106)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Plant cells differ from animal cells in having
- Clamp connection is found in
- Enzyme helping in oxidative decarboxylation of pyruvic acid is
- Light reaction in photosynthesis occurs in
- Haem protein complexes that act as oxidising agents during plant respiration
Topics: Locomotion and Movement (106)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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