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Chemical Coordination and Integration · Question 24

NEET 2018MCQEasy📈 Topic in 25% papers+4−1
1

Which of the following is an amino acid derived hormone?

  1. Ecdysone
  2. Estriol
  3. Epinephrine
  4. Estradiol

Answer

(3) Epinephrine

Solution

As per NCERT, hormones are classified by chemical nature: amino-acid derivatives (epinephrine, thyroxine), peptide/protein hormones, steroids (cortisol, testosterone, estradiol, progesterone) and iodothyronines.

⇒ Ecdysone (insect moulting hormone), estriol and estradiol are steroids.

⇒ Epinephrine (adrenaline) is derived from the amino acid tyrosine.

Answer: (3)

NEET 2018

Keep practising — Chemical Coordination and Integration

2

GnRH, a hypothalamic hormone, needed in reproduction, acts on

  1. anterior pituitary gland and stimulates secretion of LH and FSH
  2. posterior pituitary gland and stimulates secretion of oxytocin and FSH
  3. posterior pituitary gland and stimulates secretion of LH and relaxin
  4. anterior pituitary gland and stimulates secretion of LH and oxytocin.
NEET 2017
3

Hypersecretion of growth hormone in adults does not cause further increase in height, because

  1. epiphyseal plates close after adolescence
  2. bones lose their sensitivity to growth hormone in adults
  3. muscle fibres do not grow in size after birth
  4. growth hormone becomes inactive in adults.
NEET 2017
4

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

  1. Aldosterone – Atrial Natriuretic Factor
  2. Relaxin – Inhibin
  3. Parathormone – Calcitonin
  4. Insulin – Glucagon
NEET 2016 (Phase 1)
5

The amino acid tryptophan is the precursor for the synthesis of

  1. estrogen and progesterone
  2. cortisol and cortisone
  3. melatonin and serotonin
  4. thyroxine and triiodothyronine.
NEET 2016 (Phase 1)
6

Graves' disease is caused due to

  1. hyposecretion of thyroid gland
  2. hypersecretion of thyroid gland
  3. hyposecretion of adrenal gland
  4. hypersecretion of adrenal gland.
NEET 2016 (Phase 2)
7

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisation.

  1. Insulin
  2. Glucagon
  3. Secretin
  4. Gastrin
NEET 2016 (Phase 2)
8

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.
NEET 2016 (Phase 2)
9

Which hormones do stimulate the production of pancreatic juice and bicarbonate?

  1. Angiotensin and epinephrine
  2. Gastrin and insulin
  3. Cholecystokinin and secretin
  4. Insulin and glucagon
Out of syllabusNEET 2016 (Phase 2)
10

Which one of the following hormones is not involved in sugar metabolism?

  1. Insulin
  2. Glucagon
  3. Cortisone
  4. Aldosterone
AIPMT 2015
11

Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?

  1. Prolactin
  2. Melanocyte stimulating hormone
  3. Antidiuretic hormone
  4. Luteinising hormone
AIPMT 2015

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