The female sex hormone which is responsible for the development of secondary female characteristics and participates in the control of menstrual cycle is

Match List-$I$ with List-$II$:

List-$I$ (Reaction)	List-$II$ (Enzyme)
$A$. Hydrolysis of starch to maltose	$I$. Diastase
$B$. Conversion of proteins to peptides	$II$. Pepsin
$C$. Hydrolysis of sucrose to glucose and fructose	$III$. Invertase
$D$. Glucose to ethanol	$IV$. Zymase

The correct answer is:

Enzymes are

The chemical compounds released by one species of animals in order to influence the behaviour of the other members of the same species are called:

Which of the following statements about enzymes are correct?
$(i)$ They lack nucleophilic groups.
$(ii)$ They are highly specific.
$(iii)$ They catalyze reactions by lowering the activation energy of the reaction.
$(iv)$ Pepsin is a proteolytic enzyme.

How do enzymes help a substrate to be attacked by the reagent effectively?