Zoology MCQ Quiz Hub

1. This is not a function of insulin
 decreasing glycogenolysis
 lipogenesis
 gluconeogenesis
 glycogenesis

2. Action of parathormone in the human body
decreases blood sodium level
increases blood sodium level
decreases blood calcium level
 increases blood calcium level

3.  Effects of hypothyroidism include all but this
Diarrhoea
lethargy
Anorexia
Weight gain

4. Glucagon
accelerates protein synthesis within cells
accelerates conversion of glycogen into glucose
decreases conversion of glycogen into glucose
slows down glucose formation from lactic acid

5. Pituitary hormone triggering the male testes to generate sperm and in females, triggering follicular development on a monthly basis is
prolactin
 growth hormone
 follicle-stimulating hormone
 luteinizing hormone

6.  This hormone is responsible for “fight-or-flight” response
Thyroxine and melatonin
 insulin and glucagon
epinephrine and norepinephrine
oestrogen and progesterone

7.  Difference between endocrine and exocrine glands is that
endocrine glands release hormones, exocrine glands release waste
 endocrine glands are interconnected, exocrine glands are totally independent
endocrine glands are formed by epithelial tissue, exocrine glands are connective tissues primarily
 endocrine glands are ductless, exocrine glands release secretions into ducts or at the surface of the body

8. This hormone is not secreted by Hypothalamus
 PRH
FSH
CRH
 TRH

9. This is the most abundant hormone produced by the anterior pituitary
 LH
 TSH
 ACTH
GH

10. This is not an endocrine gland
Adrenal
Pituitary
Lacrimal
Thyroid

11. Chemical messengers secreted by ductless glands are called___________
Lymph
Platelets
Plasma
Hormones

12. Which of the following is NOT an endocrine gland?
Hypothalamus
Pituitary
 Parathyroid
Pancreas

13. Which of this statement is INCORRECT regarding the function of hormones?
Reproduction and sexual differentiation
 Maintenance of internal environment
Maintain body temperature
Development and growth

14. Mark the one, which is NOT the precursor of the hormone?
Amino acids
Cholesterol
Phospholipids
Proteins

15. What is the precursor of steroid hormone?
Protein
Cholesterol
Carbohydrate
Lipid

16. Which of the is a fat soluble hormone?
Amine hormone
Peptide hormone
Thyroid hormone
Protein hormone

17. Name the hormone which is synthesized from histidine amino acid?
Histamine
Epinephrine
Norepinephrine
Dopamine

18. Which of the following is protein hormone?
Oxytocin
Insulin
TSH
Antidiuretic hormone

19. Name the gland, which releases Neurohormone.
 Hypothalamus
Pituitary
Thyroid
Thyroid

20. Name the hormone which takes part in the release of FSH and LH from the anterior pituitary.
Growth hormone
GnRH
Somatostatin
 TRH

21.  Which of the following is Growth hormone inhibiting hormone?
FSH
TRH
GHRH
 Somatostatin

22. Mark the one, which is not inhibited by the effect of somatostatin.
GH
TSH
Glucagon
Dopamine

23. Name the hormone, which is released by the posterior pituitary.
Oxytocin
TSH
 ICSH
Prolactin

24.  Which of these is true of the endocrine system?
secretes hormones that are transported to target cells by blood
causes changes in metabolic activities
 effects are prolonged
All of above are true.

25. Name the gland that is located at the base of the throat, just inferior to the laryngeal prominence (Adam's apple). 
 Pituitary.
Pineal gland.
Hypothalamus.
Thyroid

26. What gland is located just superior to the kidneys?
 Pituitary.
 Adrenal.
Pancreas.
 ovaries

27. In the pancreas, which are the cells that secrete insulin, decrease the blood levels of glucose.
 delta.
  alpha.
beta.
beta.

28.   The endocrine gland responsible for the body's circadian rhythm is the:
 Thymus gland.
Pineal gland.
Parathyroid gland.
Pituitary gland.

29.   Endocrine glands differ from exocrine glands in that:
Endocrine glands are ductless and exocrine glands release secretions at the body's surface or into ducts.
 Endocrine glands release hormones, whereas exocrine glands release waste.
Endocrine glands are formed by epithelial tissue, but exocrine glands are primarily connective tissue.
Endocrine glands are all interconnected; whereas exocrine glands act completely independently.

30. Which of these is not an endocrine property?
 hormones reach targets through the blood
  effects are slow and cyclic
 rapid acting effects
 effects caused by chemicals.

31.  The primary target of the releasing and inhibiting hormones of the hypothalamus is the:
Liver and adipose tissue
Gonads
 Anterior pituitary
Bone marrow

32.  Which of these is not an endocrine gland?
Pancreas.  
 Testes.
 Salivary gland.
Parathyroid.  

33. Which is not a function of the hypothalamus?
 Affect heart rate
Control temperature
Affect water balance
   Secrete FSH

34. Which if the following gland which can be classified as an endocrine and an exocrine gland?
 Thyroid.
Thymus.
Pancreas.
 Pituitary.

35. Which of these hormones is made by the posterior pituitary?
 FSH
LH
ACTH
 ADH

36. Which gland controls basal metabolic rate (BMR)?
 Thyroid.
Parathyroid.
 Testes.
Pancreas.

37. How do hormones from the thyroid and parathyroid regulate the calcium concentration of the blood?
Calcitonin lowers blood calcium; parathyroid hormone raises blood calcium.
Parathyroid hormone lowers blood calcium; calcitonin raises blood calcium.
Thyroxine and triiodothyronine together regulate calcium levels, as needs dictate.
Both parathroid hormone and the three thyroid hormones function to regulate blood calcium levels.

38. The posterior pituitary stores and releases:
 Growth hormone and prolactin.
Prolactin and oxytocin.
Oxytocin and antidiuretic hormone (ADH).
 ADH and growth hormone.

39. Which of the following hormones are responsible for the "fight-or-flight" response?
Epinephrine and norepinephrine.
Insulin and glucagon.
Esrtogen and progesterone.
Thyroxin and melatonin.

40. The pituitary hormone that  stimulates the male testes to produce sperm and stimulates the development of the follicle in the female on a monthly cycle is:
growth hormone
luteinizing hormone
 prolactin
follicle-stimulating hormone

41. Which hormones of the adrenal glands supplement the sex hormones from the gonads?
 Mineralocorticoids, such as aldosterone
 Glucocorticoids, such as cortisol
Gnadocorticoids, such as the androgens
 Epinephrine and norepinephrine.

42. The clusters of cells in the pancreas that produce hormones are the:
Nodules.
Islets of Langerhans.
 Pancreatic medulla.
Pancreatic cortex.

43. The Glucagon is:
accelerates the conversion of glycogen into glucose.
slows down glucose formation from lactic acid.
 decreases the conversion of glycogen into glucose.
speeds up protein synthesis within cells.

44. Most hormones of the endocrine system are regulated by a:
Negative feedback mechanism.
Positive feedback mechanism.
 Hormone-receptor complex.
 Hormone-gene complex.

45. Calcitonin is a hormone of which of following:
Adrenal cortex.
Thyroid gland.
  Pituitary gland.
Thymus gland.

46. Calcium level in the blood is regulated by the:
Thyroid.
Parathyroid.
 Posterior pituitary.
 Adrenal medulla.

47. All of the following are hormones of the anterior pituitary except:
 Human growth hormone (GH).
Follicle-stimulating hormone (FSH).
Parathyroid hormone(PTH).
 Thyroid-stimulating hormone (TSH).

48. The secretions from which of these glands differs between males and females?
 Adrenal.
Parathyroid.
Gonadal.
Pancreas.