Title CHEMICAL COORDINATION & INTEGRATION.pdf ✅

Chemical Coordination and Integration  Digital www.allendigital.in [ 267 ] INTRODUCTION AND MECHANISM OF HORMONE ACTION 1. A hormone is :- (1) An enzyme (2) Chemical messenger (3) Primary messenger (4) (2) and (3) both 2. Integrative system in the body are :- (1) Endocrine system (2) Nervous system (3) Blood vascular system (4) Both endocrine and nervous system 3. Endocrine glands can be defined as those glands which pour their secretion :- (1) Directly into blood (2) Into blood or ducts (3) When they are cut (4) into particular organ 4. The receptor for protein hormones are present on (1) Nucleus (2) Endoplasmic reticulum (3) Cytoplasm (4) Cell-surface 5. Hormones are :- (1) Internal secretion mostly discharged in the blood by endocrine glands (2) Secretion of exocrine glands (3) Chemical substances secreted into the gut (4) Inorganic catalysts 6. Hormones are :- (1) Produced in low amount (2) Easily diffusible (3) Non - antigenic (4) All 7. Term "Hormone' was coined by :- (1) W.M. Baylis (2) E.H. Schally (3) E.H. Starling (4) Harris 8. Statement not correct for hormones is that, these:- (1) Are not all protein (2) Are secreted in small amount (3) Affect metabolism (4) Acts as catalyst 9. "Secondary messenger" is :- (1) Cyclic A.M.P. (2) ATP (3) ADP (4) DNA 10. Hormones are chemically :- (1) Amino acid (2) Protein (3) Steroid (4) All 11. First discovered hormone :- (1) Thyroxine (2) Adrenaline (3) Secretin (4) Insulin 12. Which of the following is not a steroid hormone? (1) Androgen (2) Aldosterone (3) Estrogen (4) Relaxin 13. Which of the following is not an endocrine gland? (1) Pancreas (2) Adrenal gland (3) Thyroid gland (4) Salivary gland 14. Which of the following hormones is not proteinaceous is nature ? (1) TSH (2) Aldosterone (3) LH (4) FSH 15. Which of the hormone is polypeptide ? (1) LH (2) FSH (3) Insulin (4) Thyroxine 16. Steroid hormones transmit their information by : (1) Stimulating the receptors present on cell membrane. (2) Entering into the cell and modifying cellular contents. (3) Entering into the cell and modifying nuclear organisation. (4) The help of an intracellular second messenger. Exercise - I
NEET : Biology [ 268 ] www.allendigital.in  Digital 17. Who is known as "father of endocrinology" ? (1) R.H. Whittakar (2) Pasteur (3) Einthoven (4) Thomas Addison 18. Which is not a peptide hormone- (1) Insulin (2) Cortisol (3) Gluagon (4) All of these 19. If receptor molecule is removed from target organ for hormone action, the target organ will : (1) Continue to respond but require higher concentration of hormone. (2) Continue to respond but in opposite way. (3) Continue to respond without any difference. (4) Not respond to hormone. 20. Prostaglandins are – (1) Amino acid (2) Steroid (3) Fatty acid (4) Carbohydrate PITUITARY GLAND AND HYPOTHALAMUS 21. Pituitary gland does not control the secretory activity of :- (1) Thyroid (2) Adrenal cortex (3) Adrenal medulla (4) Testes 22. Which of the following controls spermatogenesis :- (1) FSH (2) LTH (3) LH (4) Vasopressin 23. Which is called "Master gland" of the body :- (1) Thyroid (2) Pituitary (3) Thymus (4) Adrenal 24. The hyposecretion of pituitary hormone cause :- (1) Cretinism (2) Diabetes insipidus (3) Goitre (4) Diabetes melitus 25. Neurohypophysis releases :- (1) Vasopressin (2) Oxytocin (3) Oxytocin & prolactin (4) Vasopressin & oxytocin 26. Hormone secreted by pituitary gland are chemically – (1) All protein (2) All steroid (3) Complex compounds of proteins and carbohydrates (4) Some steroid and some protein 27. Growth hormone is produced in :- (1) Adrenals (2) Thyroid (3) Pituitary (4) Thymus 28. Gonadotrophic hormone is produced by :- (1) Interstitial cells of testis (2) Adrenal cortex (3) Adenohypophysis (4) Posterior part of thyroid 29. The hormones FSH and LH are together called: (1) Emergency hormone (2) Neuro hormone (3) Gonadotrophic hormone (4) Antistress hormone 30. Gigantism and acromegaly are due to :- (1) Hyperpituitrism (2) Hypopituitrism (3) Hypothyroidism (4) Hyperthyroidism 31. If amount of ADH decrease in blood, micturition :- (1) Remains unchanged (2) Decreases (3) Increases (4) Does not occur 32. Urine concentration is controlled by :- (1) Oxytocin (2) ADH (3) MSH (4) ACTH 33. The follicle stimulating hormone is secreted from:- (1) Posterior lobe of pituitary gland (2) Reproductive gland (3) Thyroid gland (4) Anterior lobe of pituitary gland 34. Pituitary gland is under control of :- (1) Hypothalamus (2) Adrenal gland (3) Pineal gland (4) Thyroid gland
Chemical Coordination and Integration  Digital www.allendigital.in [ 269 ] 35. "Sella turcica" is a :- (1) Depression in skull enclosing pituitary (2) Cavity of skull enclosing ears (3) Covering of testis (4) Kind of endocrine gland 36. Vasopressin is responsible for :- (1) Controlling Oogenesis (2) Regulating blood pressure and act on the nephron tubules. (3) Regulating formation of pigment. (4) Controlling spermatogenesis. 37. The main function of prolactin hormone is to: (1) Influence the activity of thyroid gland (2) Control development of Graffian follicles (3) Initiate and maintain secretion of milk by mammary gland (4) Cause ejection of milk 38. The hormones of neurohypophysis are formed in:- (1) Pars nervosa (2) Pars distalis (3) Supraoptic and paraventricular center (4) Corpus callosum 39. I.C.S.H. in male acts on :- (1) Cells of leydig (2) Sertoli cells (3) Spermatids (4) Spermatogonia 40. Hypophysis cerebri is the other name of :- (1) Adenohypophysis (2) Islets of langerhans (3) Neurohypophysis (4) Pituitary 41. Which of the following hormone helps in facultative water reabsorption by nephrons :- (1) MSH (2) FSH (3) ADH (4) ACTH 42. Hormone of hypothalamus are called :- (1) Regulatory hormones (2) Growth hormones (3) Tropic hormones (4) (1) and (3) 43. Diabetes insipidus disease is caused due to the deficiency of hormone produced by :- (1) Pituitary (2) Adrenal (3) Pancreas (4) Thyroid 44. Which of the following option in given table is correct identification of the structures labelled as A,B,C and D and their corresponding function in the above figure:- 45. MSH Produced by the pars intermedia of pituitary causes in lower vertebrates :- (1) Darkening of skin (2) Light colouration of skin (3) Both (4) Body growth 46. LTH is also known as :- (1) Lactogenic Hormone (2) Prolactin (3) Mammotropic Hormone (4) All 47. Vasopressin is related with :- (1) Concentration of urine (2) Quick digestion (3) Dilution of urine (4) Slow heart beat 48. Growth hormone of pituitary is more effective in:- (1) Presence of thyroxine (2) Absence of thyroxine (3) Absence of Insulin (4) Presence of adrenaline (1) (A) Hypothalamus Produces Prolactin hormone (2) (B) Posterior pituitary Release & FSH and LH (3) (C) Portal circulation Supply blood from hypothalamus to posterior pituitary (4) (D) Posterior pituitary Release oxytocin and vasopressin
NEET : Biology [ 270 ] www.allendigital.in  Digital 49. Gonadotropic hormone is :- (1) FSH (2) LH (3) LTH (4) FSH, LH 50. MSH is secreted in man by which part of pituitary? (1) Anterior Pituitary (2) Middle lobe of pituitary (3) Posterior lobe of pituitary (4) Infundibulum 51. Oxytocin is used in :- (1) Milk ejection (2) Parturition (3) Milk let down process (4) All of the above 52. Hyper secretion of STH leads to :- (1) Dwarfism & Acromegaly (2) Goitre, Sterility (3) Cretinism, Myxoedema (4) Gigantism & Acromegaly 53. Oxytocin mainly helps in :- (1) Milk production (2) Child birth (3) Diuresis (4) Gametogenesis 54. Which hormone is concerned with the concentration of urine ? (1) Oxytocin (2) Vasopressin (3) Prolactin (4) Cortisol 55. Acromegaly is caused by :- (1) Excess of S.T.H. (2) Excess of Thyroxine (3) Deficiency of Thyroxine (4) Excess of Adrenaline 56. Oxytocin is released from :- (1) Adenohypophysis (Anterior lobe) (2) Adenohypophysis (Posterior lobe) (3) Hypothalamus (4) Neurohypophysis 57. FSH is :- (1) Glycoprotein (2) Metalloprotein (3) Glycolipid (4) Phospholipid 58. The synthesis of Vasopressin is done by :– (1) Hypothalamus (2) Kidney (3) Anterior pituitary (4) Post. pituitary 59. Which one hormone of the pituitary of the human controls the protein metabolism and growth of skeleton ? (1) Iodo thyroxine (2) Leutotrophic hormone (3) Somatotrophic hormone (4) Oxytocin 60. Ovulation in mammals occurs mainly under the influence of :- (1) TSH and ACTH (2) FSH and LH (3) TSH and STH (4) MTH and ACTH 61. Secretion of estrogen is controlled by :- (1) HCG (2) Progesterone (3) LH (4) F.S.H. 62. Immediate cause of induction of ovulation in human female is plasma surge of :- (1) Progesterone (2) LH (3) FSH (4) Estradiol 63. Stimulation of uterine contraction during child birth is brought about by :- (1) Adrenaline (2) Progesterone (3) Oxytocin (4) Prolactin 64. Which gland secretion is under nervous control ? (1) Adrenal cortex (2) Anterior pituitary (3) Posterior pituitary (4) Pineal body 65. Which of the following is correct ? (A) Pars distalis produces GH, PRL, TSH. ACTH, LH, FSH (B) Pars intermedia secretes only one hormone called melatonin (C) Posterior lobe of pituitary is also called as neurohypophysis or pars nervosa (D)Posterior pituitary, stores and releases two hormones called oxytocin and vasopressin (1) A, B & C (2) B, C & D (3) A, C & D (4) B and C