CHEMICAL COORDINATION AND INTEGRATION 11th BIOLOGY IMPORTANT MCQS

CHEMICAL COORDINATION AND INTEGRATION 11th BIOLOGY IMPORTANT MCQS | NEET MOCK TEST

 

CHEMICAL COORDINATION AND INTEGRATION

here are 100 multiple-choice questions on chemical coordination and integration for 11th grade students, along with their answers and explanations:

1. Which gland is responsible for the secretion of growth hormone?
A) Thyroid gland
B) Adrenal gland
C) Pituitary gland
D) Pancreas
*Answer: C) Pituitary gland*
*Explanation: The pituitary gland secretes growth hormone, which regulates growth and development.*

2. Which hormone is responsible for regulating blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

3. Which gland is known as the master gland of the body?
A) Pituitary gland
B) Thyroid gland
C) Adrenal gland
D) Pancreas
*Answer: A) Pituitary gland*
*Explanation: The pituitary gland controls the secretion of hormones from other endocrine glands.*

4. Which hormone is responsible for the fight or flight response?
A) Adrenaline
B) Oxytocin
C) Serotonin
D) Dopamine
*Answer: A) Adrenaline*
*Explanation: Adrenaline is released in response to stress and prepares the body for action.*

5. What is the primary function of the thyroid hormone?
A) Regulating metabolism
B) Regulating calcium levels
C) Regulating blood sugar levels
D) Regulating blood pressure
*Answer: A) Regulating metabolism*
*Explanation: Thyroid hormones control the rate of metabolism in the body.*

6. Which hormone is responsible for regulating water balance in the body?
A) Aldosterone
B) Vasopressin
C) Estrogen
D) Progesterone
*Answer: B) Vasopressin*
*Explanation: Vasopressin, also known as antidiuretic hormone (ADH), regulates water reabsorption in the kidneys.*

7. Which hormone is responsible for stimulating milk production in mammary glands?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

8. Which hormone is responsible for regulating the sleep-wake cycle?
A) Melatonin
B) Serotonin
C) Dopamine
D) Endorphins
*Answer: A) Melatonin*
*Explanation: Melatonin is involved in regulating the circadian rhythm and promoting sleep.*

9. Which hormone is responsible for regulating blood calcium levels?
A) Parathyroid hormone
B) Calcitonin
C) Growth hormone
D) Thyroxine
*Answer: A) Parathyroid hormone*
*Explanation: Parathyroid hormone increases blood calcium levels by stimulating calcium release from bones.*

10. Which hormone is responsible for stimulating uterine contractions during childbirth?
A) Oxytocin
B) Progesterone
C) Estrogen
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth and milk ejection during breastfeeding.*

11. Which gland produces insulin?
A) Pancreas
B) Thyroid
C) Adrenal gland
D) Pituitary gland
*Answer: A) Pancreas*
*Explanation: Insulin is produced by the beta cells in the pancreas.*

12. Which hormone is responsible for stimulating the production of red blood cells?
A) Erythropoietin
B) Thyroxine
C) Cortisol
D) Glucagon
*Answer: A) Erythropoietin*
*Explanation: Erythropoietin stimulates the production of red blood cells in the bone marrow.*

13. Which hormone is responsible for stimulating the development of male secondary sexual characteristics?
A) Testosterone
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Testosterone*
*Explanation: Testosterone is the primary male sex hormone responsible for male secondary sexual characteristics.*

14. Which hormone is responsible for regulating salt and water balance in the body?
A) Aldosterone
B) Cortisol
C) Insulin
D) Glucagon
*Answer: A) Aldosterone*
*Explanation: Aldosterone regulates salt and water balance by increasing sodium reabsorption in the kidneys.*

15. Which hormone is responsible for regulating blood pressure?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone indirectly regulates blood pressure by regulating salt and water balance.*

16. Which gland secretes adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

17. Which hormone is responsible for regulating the body’s response to stress?
A) Cortisol
B) Insulin
C) Glucagon
D) Thyroxine
*Answer: A) Cortisol*
*Explanation: Cortisol is often referred to as the stress hormone and helps the body respond to stress.*

18. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

19. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

20. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

21. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D)Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

22. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

23. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

24. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

25. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
*Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.*

26. Which hormone is responsible for regulating the menstrual cycle?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: A) Estrogen*
*Explanation: Estrogen plays a key role in regulating the menstrual cycle, along with progesterone, FSH, and LH.*

27. Which hormone is responsible for stimulating the conversion of glycogen to glucose in the liver?
A) Glucagon
B) Insulin
C) Cortisol
D) Thyroxine
*Answer: A) Glucagon*
*Explanation: Glucagon promotes the breakdown of glycogen into glucose in the liver, increasing blood sugar levels.*

28. Which hormone is responsible for promoting water retention in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases water reabsorption in the kidneys, leading to water retention.*

29. Which hormone is responsible for stimulating the growth and development of the uterine lining?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: B) Progesterone*
*Explanation: Progesterone stimulates the growth and development of the uterine lining during the menstrual cycle.*

30. Which hormone is responsible for regulating the body’s response to high blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

31. Which gland is responsible for the secretion of adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

32. Which hormone is responsible for regulating salt and water balance by increasing sodium reabsorption in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases sodium reabsorption in the kidneys, regulating salt and water balance.*

33. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

34. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

35. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

36. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

37. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

38. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

39. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

40. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
*Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.*

41. Which hormone is responsible for regulating the menstrual cycle?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D)Luteinizing hormone (LH)
*Answer: A) Estrogen*
*Explanation: Estrogen plays a key role in regulating the menstrual cycle, along with progesterone, FSH, and LH.*

42. Which hormone is responsible for stimulating the conversion of glycogen to glucose in the liver?
A) Glucagon
B) Insulin
C) Cortisol
D) Thyroxine
*Answer: A) Glucagon*
*Explanation: Glucagon promotes the breakdown of glycogen into glucose in the liver, increasing blood sugar levels.*

43. Which hormone is responsible for promoting water retention in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases water reabsorption in the kidneys, leading to water retention.*

44. Which hormone is responsible for stimulating the growth and development of the uterine lining?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: B) Progesterone*
*Explanation: Progesterone stimulates the growth and development of the uterine lining during the menstrual cycle.*

45. Which hormone is responsible for regulating the body’s response to high blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

46. Which gland is responsible for the secretion of adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

47. Which hormone is responsible for regulating salt and water balance by increasing sodium reabsorption in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases sodium reabsorption in the kidneys, regulating salt and water balance.*

48. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

49. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

50. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

51. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

52. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

53. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

54. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

55. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
*Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.*

56. Which hormone is responsible for regulating the menstrual cycle?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: A) Estrogen*
*Explanation: Estrogen plays a key role in regulating the menstrual cycle, along with progesterone, FSH, and LH.*

57. Which hormone is responsible for stimulating the conversion of glycogen to glucose in the liver?
A) Glucagon
B) Insulin
C) Cortisol
D) Thyroxine
*Answer: A) Glucagon*
*Explanation: Glucagon promotes the breakdown of glycogen into glucose in the liver, increasing blood sugar levels.*

58. Which hormone is responsible for promoting water retention in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases water reabsorption in the kidneys, leading to water retention.*

59. Which hormone is responsible for stimulating the growth and development of the uterine lining?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: B) Progesterone*
*Explanation: Progesterone stimulates the growth and development of the uterine lining during the menstrual cycle.*

60. Which hormone is responsible for regulating the body’s response to high blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

61. Which gland is responsible for the secretion of adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

62. Which hormone is responsible for regulating salt and water balance by increasing sodium reabsorption in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases sodium reabsorption in the kidneys, regulating salt and water balance.*

63. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

64. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

65. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

66. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

67. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

68. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

69. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

70. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
*Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.*

71. Which hormone is responsible for regulating the menstrual cycle?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: A) Estrogen*
*Explanation: Estrogen plays a key role in regulating the menstrual cycle, along with progesterone, FSH, and LH.*

72. Which hormone is responsible for stimulating the conversion of glycogen to glucose in the liver?
A) Glucagon
B) Insulin
C) Cortisol
D) Thyroxine
*Answer: A) Glucagon*
*Explanation: Glucagon promotes the breakdown of glycogen into glucose in the liver, increasing blood sugar levels.*

73. Which hormone is responsible for promoting water retention in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases water reabsorption in the kidneys, leading to water retention.*

74. Which hormone is responsible for stimulating the growth and development of the uterine lining?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: B) Progesterone*
*Explanation: Progesterone stimulates the growth and development of the uterine lining during the menstrual cycle.*

75. Which hormone is responsible for regulating the body’s response to high blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

76. Which gland is responsible for the secretion of adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

77. Which hormone is responsible for regulating salt and water balance by increasing sodium reabsorption in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases sodium reabsorption in the kidneys, regulating salt and water balance.*

78. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

79. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

80. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

81. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

82. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

83. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

84. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

85. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
*Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.*

86. Which hormone is responsible for regulating the menstrual cycle?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: A) Estrogen*
*Explanation: Estrogen plays a key role in regulating the menstrual cycle, along with progesterone, FSH, and LH.*

87. Which hormone is responsible for stimulating the conversion of glycogen to glucose in the liver?
A) Glucagon
B) Insulin
C) Cortisol
D) Thyroxine
*Answer: A) Glucagon*
*Explanation: Glucagon promotes the breakdown of glycogen into glucose in the liver, increasing blood sugar levels.*

88. Which hormone is responsible for promoting water retention in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases water reabsorption in the kidneys, leading to water retention.*

89. Which hormone is responsible for stimulating the growth and development of the uterine lining?
A) Estrogen
B) Progesterone
C) Follicle-stimulating hormone (FSH)
D) Luteinizing hormone (LH)
*Answer: B) Progesterone*
*Explanation: Progesterone stimulates the growth and development of the uterine lining during the menstrual cycle.*

90. Which hormone is responsible for regulating the body’s response to high blood sugar levels?
A) Insulin
B) Glucagon
C) Cortisol
D) Thyroxine
*Answer: A) Insulin*
*Explanation: Insulin lowers blood sugar levels by promoting the uptake of glucose by cells.*

91. Which gland is responsible for the secretion of adrenaline?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Adrenaline is secreted by the adrenal medulla in the adrenal gland.*

92. Which hormone is responsible for regulating salt and water balance by increasing sodium reabsorption in the kidneys?
A) Aldosterone
B) Vasopressin
C) Renin
D) Angiotensin
*Answer: A) Aldosterone*
*Explanation: Aldosterone increases sodium reabsorption in the kidneys, regulating salt and water balance.*

93. Which hormone is responsible for stimulating the release of an egg from the ovary?
A) Luteinizing hormone (LH)
B) Follicle-stimulating hormone (FSH)
C) Progesterone
D) Estrogen
*Answer: A) Luteinizing hormone (LH)*
*Explanation: LH triggers ovulation, the release of an egg from the ovary.*

94. Which hormone is responsible for stimulating the development of female secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Prolactin
*Answer: A) Estrogen*
*Explanation: Estrogen is the primary female sex hormone responsible for female secondary sexual characteristics.*

95. Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Aldosterone
*Answer: A) Calcitonin*
*Explanation: Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.*

96. Which gland is responsible for the secretion of cortisol?
A) Adrenal gland
B) Pituitary gland
C) Thyroid gland
D) Pancreas
*Answer: A) Adrenal gland*
*Explanation: Cortisol is produced by the adrenal cortex in the adrenal gland.*

97. Which hormone is responsible for stimulating the contraction of smooth muscle in the uterus during childbirth?
A) Oxytocin
B) Estrogen
C) Progesterone
D) Prolactin
*Answer: A) Oxytocin*
*Explanation: Oxytocin stimulates uterine contractions during childbirth.*

98. Which hormone is responsible for stimulating the production of breast milk?
A) Prolactin
B) Oxytocin
C) Estrogen
D) Testosterone
*Answer: A) Prolactin*
*Explanation: Prolactin stimulates milk production in mammary glands during lactation.*

99. Which gland is responsible for the secretion of thyroxine?
A) Thyroid gland
B) Pituitary gland
C) Adrenal gland
D) Pancreas
*Answer: A) Thyroid gland*
*Explanation: Thyroxine is produced by the thyroid gland.*

100. Which hormone is responsible for regulating the body’s response to low blood sugar levels?
A) Glucagon
B) Insulin
C) Cortisol
D) Aldosterone
*Answer: A) Glucagon*
Explanation: Glucagon raises blood sugar levels by promoting the breakdown of glycogen in the liver.

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