An enzyme obtained from an animal source has been classified by the Enzyme Commission and allocated its unique four-digit number $1.2.1.4$. To which of the following classes does it belong?

Digestive enzymes are included in which of the following classes?

Which of the following is not correctly matched?

Competitive inhibition could be reversed by increasing the concentration of

What is an apoenzyme?

Given below are the statements regarding enzymes. Choose the correct statements.
$i$. All enzymes are proteinaceous.
$ii$. Enzyme becomes more active at the temperature of $60^{\circ}C$ to $70^{\circ}C$.
$iii$. Enzymes have one or two active sites where substrate binds with the enzyme.
$iv$. Any increase or decrease in specific $pH$,enzyme activity is always enhanced.
$v$. Enzymes remain active to catalyze again after completion of first reaction.