Proteins that possess catalytic activity are called . . . . . . .

An average living cell contains about:

Which of the following is a competitive inhibitor of succinic dehydrogenase?

An allosteric enzyme has an allosteric site for .........

Regarding the catalytic cycle of an enzyme action,select the correct sequential steps:
$A$. Substrate-enzyme complex formation.
$B$. Free enzyme ready to bind with another substrate.
$C$. Release of products.
$D$. Chemical bonds of the substrate broken.
$E$. Substrate binding to active site.
Choose the correct answer from the options given below:

Which of these enzymes are not made of protein?