STD 12 - 3. reproductive health — NEET STD 11 Science — Question

$I.$ Each myosin is a polymerized protein

$II.$ Many meromyosin constitutes one thick filament (myosin)

$III.$ Each meromyosin's tail is called heavy meromyosin $(HMM)$ and head is called light meromyosin $(LMM)$

$IV.$ The globular head is an active $ATP$ ase enzyme and has binding sites for $ATP$ and active sites for actin

Choose the option with correct statements

$I$. Pills prevent ovulation during use as contraception technique

$II$. Copper$-T$ prevents implantation

$III$. Vasectomy produces semen containing no sperm