MCQ
The main structure of centriole is:
- A9 + 3 fibrils
- ✓9 + 2 fibrils
- C9 triplet sites
- D13 globular subunits
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$A$. Muscle bundles are held together by collagenous connective tissue layer called fascicle.
$B$. Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions.
$C$. Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins.
$D$. $M$ line is considered as functional unit of contraction called sarcomere.
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