Compared to a bull, a bullock is docile because of:
1. higher levels of thyroxine
2. higher levels of cortisone
3. lower levels of blood testosterone
4. lower levels of adrenalin/noradrenalin in its blood

Genetically engineered bovine (bST), sometimes called rbST (recombinant bovine somatotropin) or rbGH (recombinant bovine growth hormone) are used in
1. therapeutic drugs
2. agriculture
3. dairy industry
4. DNA fingerprinting

The amino acid tryptophan is the precursor for the synthesis of
1. Melatonin and serotonin
2. Thyroxine and triiodothyronine
3. Estrogen and progesterone
4. Cortisol and cortisone

Which of the following glucose transporters is insulin-dependent?

1. GLUT IV

2. GLUT I

3. GLUT II

4. GLUT III

Which one of the following is an example of negative feedback loop in humans?
1. Secretion of sweat glands and constriction of skin blood vessels when it is too hot.
2. Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold.
3. Secretion of tears after falling of sand particles into the eye.
4. Salivation of mouth at the sight of delicious food.

Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
1. Norepinephrine
2. Acetylcholine
3. GABA
4. Dopamine

Toxic agents present in food which interfere with thyroxine synthesis lead to the development of
1. toxic goitre
2. cretinism
3. simple goitre
4. thyrotoxicosis

GnRH, a hypothalamic hormone, needed in reproduction, acts on the
1. anterior pituitary gland and stimulates secretion of LH and oxytocin
2. anterior pituitary gland and stimulates secretion of LH and FSH
3. posterior pituitary gland and stimulates secretion of oxytocin and FSH
4. posterior pituitary gland and stimulates secretion of LH and relaxin

The posterior pituitary gland is not a ‘true’ endocrine gland because
1. it is provided with a duct
2. it only stores and releases hormones
3. it is under the regulation of hypothalamus
4. it secretes enzymes

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom