Which enzyme is responsible for the digestion of compounds like paper and cloth in animals like cows and buffaloes?

Which of the following is a proteolytic enzyme?

$A$ biological catalyst is essentially

In the commercial manufacture of ethyl alcohol from starchy substances by the fermentation method,which enzymes stepwise complete the fermentation reaction?

Pheromones are chemicals

Which of the following hormones is responsible for the development of secondary female characteristics and participates in the control of the menstrual cycle?