Tardigrade
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Biology
Sarcomere is the functional unit of contraction in a muscle fibre. Identify the portion of myofibril that constitute a sarcomere.
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Q. Sarcomere is the functional unit of contraction in a muscle fibre. Identify the portion of myofibril that constitute a sarcomere.
KCET
KCET 2016
Locomotion and Movement
A
The portion of myofibril between two successive‘M’line.
9%
B
The portion of myofibril between two successive ‘I’ band.
10%
C
The portion of myofibril between two successive ‘A’ band.
8%
D
The portion of myofibril between two successive ‘Z’ line.
74%
Solution:
The sarcomere comprises A-band and half of each adjacent I-band. Sarcomere is the functional unit of myofibril.