Which of the following is an example of a protein that acts as a hormone?

Enzymes are made up of

Which one of the following statements is wrong in the case of enzyme catalysis?

Assertion : Activity of an enzyme is $pH$ dependent.
Reason : Change in $pH$ affects the solubility of enzyme in water.

Which of the following substances is responsible for controlling the sugar level in the blood?

$CH_2OOCR' \newline | \newline CHOOCR'' \newline | \newline CH_2OOCR'''$ $\xrightarrow[\text{Hydrolysis}]{\text{Enzyme}} CH_2OH \newline | \newline CHOH \newline | \newline CH_2OH + R'COOH + R''COOH + R'''COOH$
The enzyme used in the above reaction is: