CBSE Class 11 Biology Chemical Coordination and Integration MCQs Set 04

Question: Steroid hormones are produced only by the
a) Adrenal medulla and pancreas
b) Thyroid gland and pancreas
c) Anterior and posterior pituitary
d) Sex organs and adrenal cortex
Answer: d

Question: Abnormal secretion of thyroxine produces
a) Acromegaly
b) Addison’s disease
c) Cretinism
d) Goitre
Answer: c

Question: Which of the following hormone acts upon the renal tubule and blood capillaries?
a) Glucagon
b) Aldosterone
c) Vasopressin
d) Glucocorticoids
Answer: c

Question: MSH is secreted by
a) Pars intermedia
b) Pars tuberalis
c) Pars distalis
d) Pars nervosa
Answer: a

Question: Ovulation and formation of corpus luteum is controlled by
a) ICSH
b) FSH
c) Thyroxine hormone
d) Luteinizing hormone
Answer: d

Question: When amount of ADH decreases in blood, micturition
a) Increases
b) Decreases
c) Remains unaffected
d) Increases and then decreases
Answer: a

Question: Which endocrine gland stores its secretion in extracellular spaces before discharging it into blood?
a) Testis
b) Pancreas
c) Thyroid
d) Adrenal
Answer: c

Question: Which hormone possesses anti-insulin effect?
a) Cortisol
b) Calcitonin
c) Oxytocin
d) Aldosterone
Answer: a

Question: Sleep-wake cycle and menstrual cycle are maintained by
a) Progesterone
b) Melatonin
c) Oxytocin
d) MSH
Answer: b

Question: Blood glucose level in man is regulated by
a) Insulin only
b) Adrenaline
c) Glucagon and insulin
d) All of the above
Answer: c

Question: The hormone that supports pregnancy and stimulates mammary glands for the formation of alveoli for storing milk, is secreted from
a) Anterior pituitary
b) Posterior pituitary
c) Graafian follicle
d) Corpus luteum
Answer: d

Question: Deficiency of vasopressin primarily results in
a) Increased volume of urine
b) Decreased volume of urine
c) Excessive secretion of urochrome
d) Change in pH from acidic to alkaline range
Answer: a

Question: Which one of the following disease is caused by the under secretion of cortisol hormone?
a) Anaemia
b) Addison’s disease
c) Hyperglycemia
d) Mental retardation
Answer: b

Question: Secretion of estrogen is controlled by
a) hCG
b) FSH
c) Progesterone
d) Testosterone
Answer: b

Question: Which of the following occurs due to ADH deficiency?
a) Increase urine output
b) Increased water in urine
c) Less urine
d) No urination
Answer: b

Question: Mark the correct statement regarding somatostatin.
a) It is secreted from anterior pituitary
b) It inhibits the release of growth hormone
c) It is secreted from posterior pituitary
d) It stimulates STH secretion
Answer: b

Question: Which of the following gland is often referred in connection with AIDS?
a) Thymus
b) Thyroid
c) Adrenal
d) Pancreas
Answer: a

Question: Which of the following is (are) not influenced by parathyroid hormone?
a) Kidney
b) Bone
c) Small intestine
d) None of the above
Answer: d

Question: Thyroxine acts on every organ of the body, except
a) Adult brain
b) Testis
c) Thyroid itself
d) Bones
Answer: b

Question: Which of the following hormone is required for the maintenance of corpus luteum?
a) Progesterone
b) Estrogen
c) FSH
d) LH
Answer: d

Question: A gorilla-like appearance with huge hands and legs is due to abnormal secretion of
a) FSH
b) LH
c) LTH
d) GH
Answer: d

Question: The hormone secretin is produced in
a) pancreas and influences conversion of glycogen into glucose.
b) small intestine and stimulates pancreas.
c) adrenal glands and accelerates heartbeat.
d) testes and produces male secondary sexual characters.
Answer: b

Question: Secretion of which of the following structure is responsible in preparing the inner wall of uterus for implantation?
a) Ovary
b) Pituitary gland
c) Corpus luteum
d) Ovarian follicle
Answer: c

Question: Thymus in mammals is mainly concerned with
a) regulation of body growth.
b) secretion of thyrotropin.
c) regulation of body temperature.
d) immunological functions.
Answer: d

Question: Anti-ageing hormone is
a) thyroxine
b) melatonin
c) estrogen
d) testosterone
Answer: b

Question: Which hormone helps in reabsorption of water from kidney?
a) ADH
b) STH
c) ACTH
d) TTH
Answer: a

Question: Diabetes insipidus is caused by hyposecretion of
a) insulin
b) vasopressin
c) oxytocin
d) thymosin
Answer: b

Question: ACTH is secreted by
a) adrenal cortex
b) pituitary
c) adrenal medulla
d) thyroid
Answer: b

Question: Hormone which helps in implantation of embryo in uterus is
a) estrogen
b) oxytocin
c) relaxin
d) progesterone
Answer: d

Question: Triple ‘F’ gland for flight, fright and fight is
a) thyroid
b) thymus
c) pituitary
d) adrenal
Answer: d

Question: Choose the correct statement about ‘neurohypophysis’?
a) It stores and releases hormones secreted by hypothalamus.
b) It secretes its own hormones.
c) It is poorly developed and functionless in humans.
d) It stores the hormones produced by adenohypophysis.
Answer: a

Question: Which of the following statements is correct in relation to the endocrine system?
a) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.
b) Non-nutrient chemicals produced by the body in trace amount that act as intercellular messengers are known as hormones.
c) Releasing and inhibitory hormones are produced by the pituitary gland.
d) Adenohypophysis is under direct neural regulation of the hypothalamus.
Answer: b

Question: Glycogenesis is the result of the hormone secreted from
a) alpha cells of pancreas.
b) beta cells of pancreas.
c) thyroid gland.
d) adrenal gland.
Answer: b

Question: Anterior lobe of pituitary secretes
a) ACTH, TSH and oxytocin
b) STH, GH and ADH
c) TSH, ADH and prolactin
d) FSH, GH and LH
Answer: d

Question: Oxytocin hormone is produced by
a) pituitary
b) adrenals
c) hypothalamus
d) thyroid
Answer: a

Question: During pregnancy corpus luteum
a) degenerates.
b) changes to corpus albicans.
c) persists until parturition.
d) persists up to the middle of pregnancy.
Answer: d

Question: Ovulation in humans is controlled by
a) FSH and LTH
b) FSH and G.H
c) LTH and LH
d) FSH and LH
Answer: b

Question: One similarity between enzymes and hormones is that
a) both are proteins.
b) both can be used again and again.
c) both are used in minute amounts.
d) both act at a particular pH.
Answer: c

Question: Which hormone interacts with membrane-bound receptor and does not normally enter the target cell?
a) FSH
b) Estrogen
c) Thyroxine
d) Cortisol
Answer: a

Question: Which of the following is correct for thyrocalcitonin?
a) Produced by parathyroid and decreases Ca++ in ECF.
b) Produced by thyroid and decreases Ca++ in ECF.
c) Produced by parathyroid and increases Ca++ in ECF.
d) Produced by thyroid and increases Ca++ in ECF.
Answer: b

Question: Which one of the following pairs of hormones can easily pass through the cell membrane and bind to a receptor inside the nucleus?
a) Somatostatin, Oxytocin
b) Cortisol, Testosterone
c) Insulin, Glucagon
d) Thyroxine, Insulin
Answer: b

Question: Which of the following hormone opposes parathormone?
a) ADH
b) STH
c) Thyroxine
d) Thyrocalcitonin
Answer: d

Question: Hormones of pituitary gland are
a) Some steroids and some proteins
b) All proteins/peptides
c) Complex substances formed from proteins, steroids, carbohydrates
d) All steroids
Answer: b

Question: Which of the following is a gastro-intestinal hormone?
a) Cholinesterase
b) Enterokinase
c) Secretin
d) Interocrinin
Answer: c

Question: Receptors for protein hormones are found
a) Inside nucleus
b) Inside cytoplasm
c) On surface of ER
d) On cell surface
Answer: d

Question: Source of somatostatin is the same as that of
a) Insulin and glucagon
b) Vasopressin and oxytocin
c) Thyroxine and calcitonin
d) Somatotropin and prolactin
Answer: a

Question: Which statement regarding PTH is correct?
a) It is a peptide hormone.
b) It stimulates bone resorption.
c) It is hypercalcemic hormone.
d) All of the above.
Answer: d

Question: Which one of the following is not a second messenger in hormone action?
a) Calcium
b) Sodium
c) cAMP
d) cGMP
Answer: b

Question: What of the following is correct about calcitonin?
a) It contains iodine.
b) It is an amino acid.
c) It is released from parathyroid.
d) It is released from thyroid gland.
Answer: d

Question: Norepinephrine
(i) is released by sympathetic fibres.
(ii) is released by parasympathetic fibres.
(iii) increases the heart rate.
(iv) decreases blood pressure.
Which of the above said statements are correct?
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (ii) and (iv)
Answer: b