PYQSide ExamsMy practice

Chemical Coordination and Integration · Question 22

NEET (UG) 2019MCQEasy📈 Topic in 25% papers+4−1
1

How does steroid hormone influence the cellular activities?

  1. Activating cyclic AMP located on the cell membrane
  2. Using aquaporin channels as second messenger
  3. Changing the permeability of the cell membrane
  4. Binding to DNA and forming a gene-hormone complex

Answer

(4) Binding to DNA and forming a gene-hormone complex

Solution

Steroid hormones are lipid soluble, so they cross the cell membrane and bind to intracellular (nuclear) receptors.

⇒ As per NCERT, hormones which interact with intracellular receptors (e.g., steroid hormones, iodothyronines) mostly regulate gene expression or chromosome function by the interaction of the hormone-receptor complex with the genome.

∵ cAMP as second messenger is used by protein (membrane-receptor) hormones,

∴ steroid hormones act by binding to DNA and forming a gene-hormone complex.

Answer: (4)

NEET (UG) 2019

Keep practising — Chemical Coordination and Integration

2

Which of the following glucose transporters is insulin-dependent?

  1. GLUT III
  2. GLUT IV
  3. GLUT I
  4. GLUT II
NEET (UG) 2019
3

Which of the following is an amino acid derived hormone?

  1. Ecdysone
  2. Estriol
  3. Epinephrine
  4. Estradiol
NEET 2018
4

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
5

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
6

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)
7

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)
8

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)
9

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)
10

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)
11

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)

All Chemical Coordination and Integration PYQs →

PDFDownload Chemical Coordination and Integration PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Zoology chapters
Class 11Animal KingdomStructural Organisation in AnimalsBiomolecules (Biology)Digestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and Integration
Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills