Question

Enzymes that perform physiological function are termed as _______

(a) allosteric enzymes

(b) isoenzymes

(c) non-functional enzymes

(d) functional enzymes

I have been asked this question during an interview.

My question comes from Clinical Significance of Amylase, Transaminase and Proteinases topic in chapter Clinical Enzymology of Enzyme Technology

Answer 1

The correct choice is (d) functional enzymes

The explanation: Enzymes that perform physiological function are termed as functional enzymes. Examples: lipoprotein lipase in circulation and enzymes of blood coagulation. Whereas enzymes having no physical function are referred to as non-functional enzymes. Multiple forms of the same enzyme are referred to as isoenzyme. The enzymes having allosteric sites, other than the catalytic site which is used for binding for regulatory metabolites is referred to as allosteric enzymes.