Question

Most of the homeostatic mechanisms operate through feed back mechanism. The best example is illustrated by

• A. Hormones
• B. Enzymes
• C. Vitamins
• D. Ribozymes

Answer 1

The correct option is A Hormones

Hormones provide the best feedback mechanism. There are positive feedback mechanism in which the hormone stimulates the production of itself example estrogen before ovulation.

There also are negative feedback mechanism where a hormone inhibits its own production example thyroid hormone ( $T_4$ ).

Enzymes, vitamins and Ribozymes do not show such feedback mechanism.

So the correct option is ' Hormones'.