MCQ
Identify figure.


- ✓Adenine
- BGuanine
- CUracil
- DCytosine

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Which of the following statement are true?
$(I)$ In human body, it is made of number of muscle bundles.
$(II)$ Muscle bundles contains a number of muscle fibers and fiber is lined by the sarcollemma.
$(III)$ In Muscle fiber, sarcoplasm contains only one nucleus.
$(IV)$ In muscle fiber, sarcoplasmic reticulum is the store house of calcium ions.