Question

Which one does not match with regard to biological activity?

• A. Creatinine
• B. Renin
• C. Gastrin
• D. Oxytocin

Answer 1

Answer: (A)

Creatinine

A. Creatinine is a metabolic waste product produced from the metabolism of creatine.

B. Renin is a protease protein as well as an enzyme which is secreted from kidneys and participates in renin-angiotensin-aldosterone system, a mechanism that is related with constriction of arterioles.

C. Secretin is secreted in duodenum and stimulates the secretion of pancreatic juice but inhibits the secretion of gastric juices.

D. Oxytocin is secreted from the posterior pituitary and helps in the contraction of uterus during childbirth and also stimulates release of milk from mammary glands i.e. lactation.

Hence, creatinine does not match with regard to biological activity because it is a metabolic waste product.

So, the correct answer is 'Creatinine'.