During muscular contraction,which of the following processes occurs?

Identify the muscle which represents the following characteristics and choose the correct option accordingly.
$I.$ Transportation of food through the digestive tract.
$II.$ Transportation of gametes through the genital tract.

Choose the correct option for the following:
Biceps $\quad$ Iris $\quad$ Heart

During muscle contraction,$ATP$ provides energy for

Contraction of muscle fibre takes place by the sliding of $:-$

Which contractile protein of skeletal muscle is associated with $ATPase$ activity?