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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Urinary excretion of vanillyl madelic acid is increased in (A) Phaeochromocytoma (B) Cushing’s syndrome (C) Carcinoid syndrome (D) Aldosteronism |
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Answer» (A) Phaeochromocytoma |
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| 2. |
Blood brain barrier can be crossed by (A) Epinephrine (B) Dopamine (C) Dopa (D) All of these |
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Answer» Correct option (C) Dopa |
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| 3. |
In A chain of the insulin molecule the Nterminal amino acid is (A) Glycine (B) Valine (C) Serine (D) Phenylalanine |
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Answer» Correct option (A) Glycine |
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| 4. |
Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these |
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Answer» (D) All of these |
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| 5. |
Thyroid hormones are present in blood (A) In free form (B) In association with thyroxine binding globulin (TBG) (C) In association with thyroxine binding prealbumin (TBPA) (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also |
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Answer» (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also |
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| 6. |
For Catecholamine biosynthesis the rate limiting enzyme is (A) DOPA decarboxylase (B) DOPAMINE β-hydroxylase (C) Tyrosine hydroxylase (D) Phenylalanine hydroxylase |
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Answer» (A) DOPA decarboxylase |
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| 7. |
The first amino acyl tRNA which initiates translation in eukaryotes is (A) Mehtionyl tRNA (B) Formylmethionyl tRNA (C) Tyrosinyl tRNA (D) Alanyl tRNA |
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Answer» (A) Mehtionyl tRNA |
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| 8. |
Melatonin is synthesised in (A) Hypothalamus (B) Posterior pituitary gland (C) Pineal gland (D) Melanocytes |
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Answer» (D) Melanocytes |
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| 9. |
Secretion of catecholamines is increased in (A) Cushing’s syndrome (B) Addison’s disease (C) Phaeochromocytoma (D) Simmond’s disease |
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Answer» (C) Phaeochromocytoma |
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| 10. |
The second messenger for PTH is (A) Cyclic AMP (B) Cyclic GMP (C) Diacylglycerol (D) Inositol triphosphate |
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Answer» (A) Cyclic AMP |
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| 11. |
Catecholamine hormones are synthesized in the (A) Chromaffin cells of adrenal medulla (B) Zona glomerulosa of adrenal cortex (C) Zona fasciculate of adrenal cortex (D) Zona reticularis of adrenal cortex |
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Answer» (B) Zona glomerulosa of adrenal cortex |
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| 12. |
Thyroid hormones are synthesized by the iodination of the amino acid: (A) Glycine (B) Phenylalanine (C) Alanine (D) Tyrosine |
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Answer» (D) Tyrosine |
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| 13. |
Aspirin blocks the synthesis of (A) Prostaglandins only (B) Prostacyclins only (C) Thromboxanes only (D) All of these |
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Answer» (D) All of these |
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| 14. |
In the biosynthesis of testosterone the rate limiting step is conversion of (A) Cholesterol to pregnenolone (B) Pregnenolone to progesterone (C) Progesterone to 17 α-hydroxy progesterone (D) 17 α-Hydroxy progesterone to androstenedione |
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Answer» (A) Cholesterol to pregnenolone |
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| 15. |
The antibiotic which has a structure similar to the amino acyl end of tRNA tyrosine is (A) Actinomycin d (B) Streptomycin (C) Puromycin (D) Mitomycin c |
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Answer» (C) Puromycin |
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| 16. |
Posterior pituitary gland secretes (A) Catecholamines (B) Oxytocin (C) Follicle stimulating hormone (D) Serotonin |
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Answer» (A) Catecholamines |
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| 17. |
Vasopressin and oxytocin circulate unbound to proteins and have very short plasma half lives, on the order of (A) 1–2 minutes (B) 2–4 minutes (C) 5–8 minutes (D) 10–12 minutes |
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Answer» (A) 1–2 minutes |
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| 18. |
Which of the following hormones are synthesized as prehormones (A) Vasopressin and oxytocin (B) Growth hormone and insulin (C) Insulin and parathyroid hormone (D) Insulin and Glucagon |
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Answer» (C) Insulin and parathyroid hormone |
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| 19. |
Cyclic AMP acts as the second messenger for all of the following except (A) Oxytocin (B) TSH (C) ACTH (D) FSH |
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Answer» Correct option (C) ACTH |
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| 20. |
Which of the following is used for inducing labour? (A) Prostaglandins (B) Prostacyclins (C) Vasopressin (D) Thromboxanes |
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Answer» (A) Prostaglandins |
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| 21. |
Which is incorrect ? Epinephrin promotes the glycogenolysis in (A) Muscle (B) Liver (C) Heart (D) None of these |
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Answer» Correct option (C) Heart |
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| 22. |
All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole |
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Answer» Correct option (A) Purine |
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| 23. |
A common intermediate in the synthesis of all the steroid hormones is (A) Pregnenolone (B) 17-Hydroxypregnenolone (C) Corticosterone (D) Progesterone |
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Answer» (A) Pregnenolone |
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| 24. |
Steroid hormones are synthesized from (A) Adenine (B) Protein (C) Vitamin (D) Cholesterol |
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Answer» (D) Cholesterol |
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| 25. |
Steroid hormones are synthesised from(A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholestero |
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Answer» (A) Cholesterol |
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| 26. |
After formation of a peptide bond, mRNA is translocated along the ribosome by (A) eEF-1 and GTP (B) eEF-2 and GTP (C) Peptidyl transferase and GTP (D) Peptidyl transferase and ATP |
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Answer» (B) eEF-2 and GTP |
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| 27. |
In the process of elongation of chain binding of amino acyl tRNA to the A site requires (A) A proper codon recognition(B) GTP(C) EF-II (D) GDP |
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Answer» (A) A proper codon recognition |
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| 28. |
eIF-4 B (A) Binds to 3’ chain initiation codon on mRNA (B) Binds to 3’ end of mRNA (C) Binds to 5’ end of mRNA (D) Unwinds mRNA near its 5’ end |
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Answer» (D) Unwinds mRNA near its 5’ end |
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| 29. |
Post-transcriptional modification of hnRNA involves all of the following except (A) Addition of 7-methylguanosine triphosphate cap (B) Addition of polyadenylate tail (C) Insertion of nucleotides (D) Deletion of introns |
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Answer» (C) Insertion of nucleotides |
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| 30. |
Which of the following does not have disulphide bond? (A) Oxytocin (B) Vasopressin (C) Insulin (D) Glucagon |
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Answer» (D) Glucagon |
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| 31. |
Regulation of ACTH secretion occurs through (A) Corticotropin releasing hormone (CRH) and corticotropin release inhibiting hormone (CRIH) of hypothalamus (B) Feedback inhibition by cortisol (C) CRH and feedback inhibition by cortisol (D) CRIH and feedback inhibition by cortiso |
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Answer» (C) CRH and feedback inhibition by cortisol |
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| 32. |
All the following statements about steroid hormones are true except (A) They are hydrophobic (B) They require carriers to transport them in circulation (C) Their receptors are intracellular (D) They require cyclic AMP as second messenger |
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Answer» (A) They are hydrophobic |
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| 33. |
Elongation of a peptide chain involves all the following except (A) mRNA (B) GTP (C) Formyl-Met-tRNA (D) Tu, TS and G factors |
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Answer» (C) Formyl-Met-tRNA |
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| 34. |
Gastrin is a polypeptide made up of (A) Five amino acids (B) Twelve amino acids (C) Seventeen amino acids (D) Twenty amino acids |
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Answer» (C) Seventeen amino acids |
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| 35. |
Human growth hormone has (A) One polypeptide chain and one intra-chain disulphide bond (B) One polypeptide chain and two intra-chain disulphide bond (C) Two polypeptide chains joined by one disulphide bond (D) Two polypeptide chains joined by two disulphide bond |
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Answer» (A) One polypeptide chain and one intra-chain disulphide bond |
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| 36. |
CRH is a polypeptide made up of (A) 39 amino acids (B) 41 amino acids (C) 51 amino acids (D) 84 amino acids |
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Answer» (B) 41 amino acids |
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| 37. |
ACTH is a polypeptide made up of (A) 39 amino acids (B) 41 amino acids (C) 51 amino acids (D) 84 amino acids |
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Answer» (D) 84 amino acids |
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| 38. |
Hormones (A) Act as coenzyme (B) Act as enzyme (C) Influence synthesis of enzymes (D) Belong to B-complex group |
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Answer» (A) Act as coenzyme |
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| 39. |
Which of the following hormones is not involved in carbohydrate metabolism? (A) ACTH (B) Glucagon (C) Vasopressin (D) Growth hormone |
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Answer» (C) Vasopressin |
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| 40. |
All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes |
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Answer» (B) All of them require specific receptors in target cells |
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| 41. |
Gout is characterized by increased plasma levels of (A) Urea (B) Uric acid (C) Creatine (D) Creatinine |
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Answer» (B) Uric acid |
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| 42. |
Binding of catecholamines to α2− adrenergic receptors (A) Increases the intracellular concentration of cAMP (B) Increases the intracellular concentration of cGMP (C) Decreases the intracellular concentration of cAMP (D) Decreases the intracellular concentration of cGMP |
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Answer» (C) Decreases the intracellular concentration of cAMP |
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| 43. |
If the reducing equivalents enter from NAD in the respiratory chain, the phsphate/oxygen (P:O) is (A) 1 (B) 2 (C) 3 (D) 4 |
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Answer» Correct option (C) 3 |
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| 44. |
If the reducing equivalents enter from FAD in the respiratory chain, the phosphate.oxygen ration (P:O) is (A) 2 (B) 1 (C) 3 (D) 4 |
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Answer» Correct option (A) 2 |
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| 45. |
Transfer of reducing equivalents from succinate dehydrogenase to coenzyme Q is specifically inhibited by (A) Carboxin (B) Oligomycin (C) Piericidin A (D) Rotenone |
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Answer» (A) Carboxin |
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| 46. |
__________ hormone is a single chain polypeptide having 32 amino acids with molecular weight of 3,600. (A) Testosteron (B) Thyroxine (C) Calcitonine (D) Vasopressin |
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Answer» (C) Calcitonine |
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| 47. |
Hormones act only on specific organs or tissues. These are called (A) Active sites (B) Reaction centre (C) Target organ/Tissue(D) Physiological site |
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Answer» (C) Target organ/Tissue |
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| 48. |
Clinical features of hyperthyroidism include (A) Goitre, heat intolerance, weight loss and tachycardia (B) Goitre, tremors, tachycardia and cold intolerance (C) Exophthalmos, goiter, tachycardia and loss of appetite (D) Exophthalmos, goiter, tremors and obesity |
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Answer» (A) Goitre, heat intolerance, weight loss and tachycardia |
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| 49. |
All the following may occur in myxoedema except (A) Cold intolerance (B) Low BMR (C) Tachycardia (D) Dry and coarse skin |
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Answer» (C) Tachycardia |
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| 50. |
Using written convention which one of the following sequences is complimentary to TGGCAGCCT? (A) ACCGTCGGA (B) ACCGUCGGA (C) AGGCTGCCA (D) TGGCTCGGA |
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Answer» (A) ACCGTCGGA |
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