Starch is converted into maltose by the

Select the correct option regarding enzymes:

Which hormone helps in the conversion of glucose into glycogen?

Identify the enzyme that catalyses the reaction of $CO_{2}$ with water in the human body.

Which of the following is an amine hormone?

Some enzymes are made after the reaction where they are used. What name is given to the class of enzymes which catalyse the oxidation of one substrate with simultaneous reduction of another substrate?