Biology MCQs with Answer (part 1) by General knowledge Solutions

Biology MCQs with Answer (part 1)  by General knowledge Solutions

                                                                                 

1. Tyrosine of thyroglobulin is acted upon by ________ to give mono and diiodo tyrosines.

(A) Potassium Iodide

(B) Iodine

(C) Iodide I

(D) Higher valency state of iodine (I+)

2. Whcih of the following hormone does not activate adenylate cyclase?

(A) Epinephrine

(B) Glucagon

(C) Parathyroid hormone

(D) Insulin

3. Pheochromacytoma is a tumor of

(A) adrenal medulla

(B) bone

(C) head of Pancreas

(D) pituitary

4. Which one of the following statements is incorrect?

(A) Insulin increases glucose phosphorylation

(B) Insulin increases glycolysis

(C) Insulin augments HMP shunt

(D) Insulin promotes gluconeogenesis

5. Which of one ring in the structure of the following is aromatic?

(A) Androgens

(B) Estrogens

(C) Cholesterol

(D) Bile acids

6. Which of one of the following is not GUT hormone?

(A) Motiline

(B) Secretion

(C) Gastrin

(D) Calcitonin

7. 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

8. This hormone has disulphide group:

(A) Glucagon

(B) Insulin

(C) T4

(D) Epinephrine

9. The blood sugar raising action of the hormone of suprarenal cortex is due to

(A) Glyconeogenesis

(B) Glycogenolysis

(C) Glucagon like activity

 (D) due to inhibition of glomerular filtration of glucose

10. Hyper insulinism can cause coma since

(A) The chief nutrient for the brain is glucose

(B) The chief nutrient for the heart is glucose

(C) The glucostatic role of the liver is damaged

(D) The kidneys are damaged

11. Which of the following property of prostaglandins has been utilized by chinicians in hospital for

(A) Inducing fever

(B) Causing inflammation

(C) Effecting smooth muscle contraction

(D) Disaggregation of spermatozoa

12. A major structural difference between estrogens and androgens is the fact that

(A) The androgens are usually C21 steroids

(B) The estrogens are usually digitonin - precipitable

(C) The androgens have an aromatic ring

(D) The estrogens have an aromatic ring

13. Alloxan can experimentally induce diabetes mellitus due to

(A) Stimulation of α cells of the islets of langerhans

(B) Necrosis of the β cells of the islets

(C) Potentiation of insulinase activity

(D) Epinephrine like action

14. Which of the following alleviates asthma?

(A) PGE1 only

(B) PGE1 and PGE2

(C) PGF2

(D) PGA

15. Thyroxine is derived from

(A) Tyrosine

(B) Tyranine

(C) Taurine

(D) Tryptaine

16. Adrneal cortical response is poor in

(A) Kwashiorkor

(B) Marasmus

(C) Fatty liver

(D) Atherosclerosis

17. Protein bound iodine in blood is present to the extent of _______ / dL

(A) 3–8 mg

(B) 4–8 mg

(C) 3–8 gm

(D) 4–8 gm

18. Prostaglandins are

(A) C2 unsaturated acids

(B) C27 saturated alcohols

(C) C20 saturated acids

(D) C27 saturated alcohols

19. Which of tne of the following scientists has not worked in the field of prostaglandins?

(A) Voneuler

(B) Sultan Karim

(C) Andre robet

(D) Kendal

20. The suffix number in the names of prostaglandins gives the number of

(A) OH groups

(B) Double bonds

(C) Acid groups

(D) Ketoacids

21. One of the important functions of prostacyclins is

(A) Inhibition of platelet aggregation

(B) Contraction of uterus

(C) Decrease of gastric secretion

(D) Relieving osthma

22. Vasopressin is also known as

(A) Antidiabetogenic hormone

(B) Antidiuretic hormone

(C) Somatotropic hormone

(D) Pitoxin

23. Which of the following is used for inducing labour?

(A) Prostaglandins

(B) Prostacyclins

(C) Vasopressin

(D) Thromboxanes

24. Which of the following does not have disulphide bond?

(A) Oxytocin

(B) Vasopressin

(C) Insulin

(D) Glucagon

25. Which is incorrect ? Epinephrin promotes the glycogenolysis in

(A) Muscle

(B) Liver

(C) Heart

(D) None of these

26. Which of one of the following is released by hypothalamus?

 (A) Somatostatin

(B) Somatotropic hormone

(C) Somato medin C

(D) Luteinising hormone

27. Which one of the following is not liberated by the adenohypophysis?

(A) Growth hormone

(B) TSH

(C) ACTH

(D) Gonadotropin

28. Which of the following hormone is not under the control of ACTH?

(A) Aldosterone

(B) Cortisol

(C) Corticosterone

 (D) Deoxycorticosterone

29. Which of the following organ prefers fructose to glucose

(A) Liver

(B) Testes

(C) Pancreas

(D) Heart

30 Total synthesis of creatine can be done by

(A) Liver

(B) Kidneys

(C) Pancreas

(D) Heart

31. Thyrotropin releasing hormone is a

(A) Dipeptide

(B) Tripeptide

(C) Octapeptide

(D) Decapeptide

 32. Hypthalamo _________ gonadal oxis, fill up the blank with the suitable word.

(A) Adrenal

(B) Thyroid

(C) Hypophyseal

 (D) Pancreatic

 33. The sequence of amino acids in human growth hormone and the synthesis were done by

(A) Sanger

(B) Krebs

(C) Chah Holi

(D) Molisch

34. Proopiomelanocortin is the precussor of

(A) ACTH

(B) β-tropin

(C) Endorphins

(D) All of these

35. Adrenalin is synthesized from

(A) Adenine

(B) Adenosine

(C) Tyrosine

(D) Tryptophan

36. Corticotropin releasing hormone controls the direct release of

(A) Pro-opiomelanocortin

(B) α MSH

(C) β MSH

(D) Endorphins

 37. The immediate parent of α, β and γ endorphins is

(A) Pro-opiomelanocortin

(B) β-lipotropin

(C) ATCH

(D) Lipoprotein

 38. Prolactin release inhibiting hormone is believed to be

(A) Serotonin

(B) Norepinephrine

(C) Dopanine

(D) Acetyl choline

39. Whcih one of the following is not a symptom of cushing’s disease?

(A) Hyperglycemia

(B) Hypernatremia

(C) Hirsutism

(D) Hyperkalemia

40. Insulin increases the permeability of glucose across the plasma membrane of muscle cells by

(A) Acting on adenylate cycle

(B) By loosening the integrity of the membrane

(C) Through Ca2+ ions

(D) By membrane cruting the hexose carries of intracellular organelles and making them fuse with the plasma membrane

41. Somatostatin is produced by

(A) Hypothalamus

(B) Pancreas

(C) Hypothalamus and pancreas

(D) Hypothalamus and Adrenals

42. Insulin like growth hormones are produced by

(A) Hypophysis

(B) Liver

(C) Pancreas

(D) Thyroid

43. In pheochromocytoma, urine will have

(A) FILGU

(B) VMA

(C) 5 HIAA

(D) Lysine and Arginine

Answer: 

1. D 2. D 3. A 4. D 5. B 6. D 7. C 8. B . A 10. A 11. C 12. D 13. B 14. B 15. A 16. A 17. A 18. A 19. D 20. B 21. A 22. A 23. A 24. D 25. C 26. A 27. D 28. A 29. B 30. C 31. B 32. C 33. C 34. D 35. C 36. A 37. B 38. C 39. D 40. D 41. C 42. B 43. B