Question

The hormone which regulates basal metabolic rate (BMR) of the body

• A. Thyroid hormone
• B. Thymosin
• C. Corticoid
• D. Pituitary hormones

Answer 1

The correct option is A Thyroid hormone

BMR refers to the rate of use of energy by a resting body to maintain its vital functions. Thyroxine and triiodothyronine are thyroid hormones which target all cells to stimulate the release of energy from stored nutrients i.e. speeding up the cellular metabolism and thereby overall growth and development. Thus, option A is correct. Option B is incorrect as thymosin, secreted by thymus gland, serves as an anti-implant factor. Corticoids are the steroid hormones produced by the adrenal cortex and serve in preparing the body for long-term stress responses by increasing the blood glucose level, protein breakdown and maintaining the water and electrolyte balance of the body. Hence, option C is incorrect. Pituitary gland is the master gland that stimulates other endocrine glands to secrete their hormones. It also speeds up the cellular metabolism by stimulating the thyroid gland to secrete its hormone via thyroid stimulating hormone. This makes option A more suitable answer than option D. Correct answer is A.