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NEET Biology · Chemical Coordination & Integration · Set 1 (Q1-30)

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  1. 1.
    Injury to adrenal cortex is not likely to affect the secretion of which one of the following?
    1. (1)Adrenaline
    2. (2)Cortisol
    3. (3)Aldosterone
    4. (4)Both Androstenedione and Dehydroepiandrosterone
  2. 2.
    Which of the following conditions will stimulate parathyroid gland to release parathyroid hormone?
    1. (1)Fall in active Vitamin D levels
    2. (2)Fall in blood levels
    3. (3)Fall in bone levels
    4. (4)Rise in blood levels
  3. 3.
    Which of the following hormones can play a significant role in osteoporosis?
    1. (1)Aldosterone and Prolactin
    2. (2)Progesterone and Aldosterone
    3. (3)Estrogen and Parathyroid hormone
    4. (4)Parathyroid hormone and Prolactin
  4. 4.
    Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?
    1. (1)Estrogen
    2. (2)Prolactin
    3. (3)Oxytocin
    4. (4)Relaxin
  5. 5.
    Select the correct matching of a hormone, its source and function.
    Hormone
    Source
    Source
    1. (1)Vasopressin
      Posterior pituitary
      Increases loss of water through
      urine
    2. (2)Norepinephrine
      Adrenal medulla
      Increases heartbeat, rate of
      respiration and alterness
    3. (3)Glucagon
      Beta-cells of islets of
      Langerhans
      Stimulates glycogenolysis
    4. (4)Prolactin
      Posterior pituitary
      Regulates growth of mammary
      glands and milk formation in
      females
  6. 6.
    The posterior pituitary gland is not a 'true' endocrine gland because :-
    1. (1)It is under the regulation of hypothalamus
    2. (2)It secretes enzymes
    3. (3)It is provided with a duct
    4. (4)It only stores and releases hormones
  7. 7.
    Hormones stored and released from neurohypophysis are:
    1. (1)Oxytocin and Vasopressin
    2. (2)Follicle stimulating hormone and Luteinizing hormone
    3. (3)Prolactin and Vasopressin
    4. (4)Thyroid stimulating hormone and oxytocin
  8. 8.
    Hormones stored and released from neurohypophysis are :-
    1. (1)Thyroid stimulating hormone and Oxytocin
    2. (2)Oxytocin and Vasopressin
    3. (3)Follicle stimulating hormone and Leutinizing hormone
    4. (4)Prolactin and Vasopressin
  9. 9.
    Which one of the following hormones is not involved in sugar metabolism?
    1. (1)Aldosterone
    2. (2)Insulin
    3. (3)Glucagon
    4. (4)Cortisone
  10. 10.
    Toxic agents present in food which interfere with thyroxine synthesis lead to the development of :
    1. (1)Simple goitre
    2. (2)Thyrotoxicosis
    3. (3)Toxic goitre
    4. (4)Cretinism
  11. 11.
    Normal sleep-wake cycle in a human body is maintained by the secretion of :
    1. (1)Thymus gland
    2. (2)Pineal gland
    3. (3)Pituitary gland
    4. (4)Thyroid gland
  12. 12.
    A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is the result of :
    1. (1)Over secretion of pars distalis
    2. (2)Deficiency of iodine in diet
    3. (3)Low secretion of growth hormone
    4. (4)Cancer of the thyroid gland
  13. 13.
    Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. ((A) - Endocrine gland, (B) - Hormone, (C) - Function/deficiency symptoms)
    (A)
    (B)
    (C)
    1. (1)Anterior pituitary
      Oxytocin
      Stimulates uterus contraction
      during child birth
    2. (2)Posterior pituitary
      Growth hormone
      (GH)
      Over secretion stimulates
      abnormal growth
    3. (3)Thyroid
      Thyroxin
      Lack of iodine in diet results in
      goitre
    4. (4)Corpus luteum
      Testosterone
      Stimulates spermatogenesis
  14. 14.
    Which of the following acts as physiological barrier?
    1. (1)Natural killer cells
    2. (2)Interferons
    3. (3)Tears from eyes
    4. (4)Mucus coating of the epithelial lining of urogenital tracts
  15. 15.
    Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus) :-
    1. (1)Somatostatin, oxytocin
    2. (2)Cortisol, testosterone
    3. (3)Insulin, glucagon
    4. (4)Thyroxin, Insulin
  16. 16.
    Select the correct matching of a hormone, its source and function.

    Hormone
    Source
    Function
    1. (1)Norepine phrine
      Adrenal medulla
      Increases heart beat, rate of respiration and alertness
    2. (2)Glucagon
      Beta-cells of langerhans
      Stimulates glycogenolysis
    3. (3)Prolactin
      Posterior pituitary
      Regulates growth of mammary glands and milk
      formation in females
    4. (4)Vasopressin
      Posterior pituitary
      Increases loss
      of water through urine
  17. 17.
    Match the source gland with its respective hormone as well as the function.
    Source gland
    Hormone
    Function
    1. (1)Posterior pituitary
      Vasopressin
      Stimulates reabsorption of water in the
      distal tubules in the nephron
    2. (2)Corpus luteum
      Oestrogen
      Supports pregnancy
    3. (3)Thyroid
      Thyroxine
      Regulated blood calcium level
    4. (4)Anterior
      Oxytocin
      Contraction of uterus muscles during
      child birth
  18. 18.
    Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilization.
    1. (1)Secretin
    2. (2)Gastrin
    3. (3)Insulin
    4. (4)Glucago
  19. 19.
    The toxic agents present in food which interfere with thyroxin synthesis lead to the development of
    1. (1)Toxic goiter
    2. (2)Cretinism
    3. (3)Simple goiter
    4. (4)Thyrotoxicosis
  20. 20.
    Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?
    1. (1)Melanocyte stimulating hormone
    2. (2)Antidiuretic hormone
    3. (3)Luteinizing hormone
    4. (4)Prolactin
  21. 21.
    How does steroid hormone influence the cellular activities?
    1. (1)Changing the permeability of the cell membrane.
    2. (2)Binding to DNA and forming a gene hormone complex.
    3. (3)Activating cyclic AMP located on the cell membrane.
    4. (4)Using aquaporin channels as second messenger.
  22. 22.
    A steroid hormone which regulates glucose metabolism is –
    1. (1)11-deoxycorticosterone
    2. (2)Cortisone
    3. (3)Cortisol
    4. (4)Corticosterone
  23. 23.
    Low in the body fluid may be the cause of
    1. (1)Tetany
    2. (2)Anaemia
    3. (3)Angina pectoris
    4. (4)Gout
  24. 24.
    Which of the following statements is correct in relation to the endocrine system?
    1. (1)Adenopophysis is under direct neural regulation of the hypothalamus.
    2. (2)Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.
    3. (3)Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones.
    4. (4)Releasing and inhibitory hormones are produced by the pituitary gland
  25. 25.
    Changes in GnRH pulse frequency in females is controlled by circulating levels of:
    1. (1)Estrogen and inhibin
    2. (2)Estrogen and progesterone
    3. (3)Progesterone only
    4. (4)Progesterone and inhibin
  26. 26.
    Which one of the following is now being commercially produced by biotechnological procedures?
    1. (1)Morphine
    2. (2)Quinine
    3. (3)Insulin
    4. (4)Nicotine
  27. 27.
    Fight-or-flight reactions cause activation of:
    1. (1)the parathyroid glands, leading to increased metabolic rate.
    2. (2)the kidney, leading to suppression of renin-angiotensin-aldosterone pathway.
    3. (3)the adrenal medulla, leading to increased secretion of epinephrine and nor epinephrene.
    4. (4)the pancreas leading to a reduction in the blood sugar levels
  28. 28.
    What is correct to say about the hormone action in humans?
    1. (1)Glucagon is secreted by b-cells of islets of Langerhans and stimulates glycogenolysis.
    2. (2)Secretion of thymosins is stimulated with aging.
    3. (3)In females, FSH first binds with specific receptors on ovarian cell membrane.
    4. (4)FHS stimulates the secretion of oestrogen and progesterone
  29. 29.
    Which one of the following pairs of hormones are the examples of those that can easily pass through cell membrane and the target cell and binds to a receptor inside it (mostly in the nucleus)?
    1. (1)Insulin, glucagon
    2. (2)Thyroxin, insulin
    3. (3)Somatostatin, oxytocin
    4. (4)Cortisol, testosterone
  30. 30.
    The Leydig cells which are found in the human body are the secretory source of
    1. (1)Progesterone
    2. (2)Intestinal mucus
    3. (3)Glucagon
    4. (4)Androgens