CBSE Questions for Class 11 Medical Biology Chemical Coordination And Integration Quiz 11 - MCQExams.com

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?
  • Glucagon
  • ACTH
  • Insulin
  • Adrenaline
Observe the given figures and select the option that correctly identifies the labels A, B, C and D.
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  • A-Parathyroid gland, B-Isthmus, C-Trachea, D-Thyroid gland
  • A-Thyroid gland, B-Isthmus, C-Trachea, D-Parathyroid gland
  • A-Thyroid gland, B-Isthmus, C-Larynx, D-Parathyroid gland
  • A-Thyroid gland, B-Corpus luteum, C-Trachea, D-Parathyroid gland
What is the function of calcitonin?
  • It increases calcium level in blood
  • It decreases calcium level in blood
  • It stimulates steroid synthesis
  • It increases absorption of water in kidney tubules
Which of the following is called emergency gland of the body?
  • Testis
  • Adrenal
  • Thymus
  • Pituitary
According to the accept concept of hormone action, if receptor molecules are removed from target organs, then the target organ will.
  • Continue to respond to the hormone without any difference
  • Not respond to the hormone
  • Continue to respond to the hormone but will require higher concentration
  • Continue to respond to the hormone but in the opposite way
What is correct to say about the hormone action in humans?
  • Glucagon is secreted by $$\beta$$-cells of islets of Langerhans and stimulates glycogenolysis
  • Secretion of thymosin is stimulated with aging
  • In females, FSH first binds with specific receptors on ovarian cell membrane
  • FSH stimulates the secretion of androgens
Mary is about to face an interview. But during the first five minutes before the interview she experiences sweating, increased rate of heart beat, respiration, etc. Which hormone is responsible for her restlessness?
  • Estrogen and progesterone
  • Oxytocin and vasopressin
  • Adrenaline and noradrenaline
  • Insulin and glucagon
Select the correct matching of a hormone, its source and function.
  • Hormone-Vasopressin, Source- Posterior pituitary, Function- Increases loss of water through urine
  • Hormone-Norepinephrine, Source-Adrenal medulla, Function- Increases heart beat, rate of respiration and alertness
  • Hormone-Glucagon, Source-Beta-cells of islets of Langerhans, Function- Stimulates glycogenolysis
  • Hormone-Prolactin, Source-Posterior pituitary, Function- Regulates growth of mammary glands and milk formation in females
All hypophysiotropic hormones are peptides except.
  • Corticotropin releasing hormone
  • Growth hormone inhibitory hormone
  • Somatostatin
  • Prolactin release inhibiting hormone
The islets of Langerhans are found in.
  • Liver
  • Pancreas
  • Stomach
  • Alimentary canal
The signal transduction of steroid hormone across cell is through
  • Binding of hormone to the cytoplasm receptor and the complex binds to hormone response element on DNA within promoter DNA
  • Binding of hormone to the transmembrane receptor which initiates the production of the second messenger that activates enzymes which further activates transcription factors
  • Binding to hormone to the transmembrane receptor which diffuses inside the cell cytoplasm and then activates the enzyme necessary for the activation of transcription factors
  • Binding of hormone to the cytoplasmic receptor that initiates the production of the second messenger which activates enzymes that further transcription factors
Which of the following do not play any role in calcium balance in the human body?
  • Vitamin D
  • Parathyroid hormone
  • Thyrocalcitonin
  • Thymosin
Match the hormones in List I with items in List II and select the correct answer using the codes given:
List-IList-II
A.Adrenalin1.Anger, fear, danger
B.Estrogen2.Attracting partners through sense of smell
C.Insulin3.Females
D.Pheromones4.Glucose
  • A - 1, B - 3, C - 4, D - 2
  • A - 1, B - 3, C - 2, D - 4
  • A - 3, B - 1, C - 4, D - 2
  • A - 3, B - 1, C - 2, D - 4
The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands. Which one of the following endocrine glands can function independent of the pituitary gland?
  • Adrenals
  • Gonads
  • Thyroid
  • Parathyroid
A hormone responsible for normal sleep-wake cycle is?
  • Epinephrine
  • Gastrin
  • Melatonin
  • Insulin
Who discovered the parathyroid glands while dissecting a rhinoceros?
  • Sir Richard Owen
  • Galen
  • Andreas Vesalius
  • Anders Olaf Retzius
Which of the following reasons states that parathyroid is hormone is a hypercalcemic hormone?
  • PTH also stimulates reabsorption of Ca2+ by the renal
    tubules
  • PTH increases Ca2+ absorption from the digested food
  • PTH control the metabolism of carbohydrates,
    proteins and fats
  • Both A and B
Which of the following is the hormone secreted by juxtaglomerular cells of kidney which stimulates the formation of RBC?
  • Cholecystokinin
  • Erythropoietin
  • Secretin
  • All of the above
Which of the following gland in our body controls the biological clock in the human body?
  • Pitutary gland
  • Thyroid gland
  • Pineal gland
  • Parathyroid gland
What are the function of the pituitary gland in our body?
  • Regulate the functions of other endocrine glands
  •  Training and development of T-lymphocytes or T cells
  •  Regulates the body's metabolism 
  • Regulate calcium levels and have no effect on metabolism
What is the function of the islets of Langerhans? 
  • Production of insulin
  • Production of glucagon
  • Glycogenesis
  • All of the above
Which of the following is not a hormone secreted by the ovaries?
  • Estrogen
  • Progesterone
  • Oxytocin
  • None of the above
Which of the following statements is/are INCORRECT regarding the immune system of an adult human being when compared to a child?
  • Thymus degenerates in old individuals
    resulting in a decreased production of thymosins
  • The immune responses of old persons become weak
  • The immunity of old person becomes weak
  • Vaccination is mostly given in childhood as an immune response is weaker in children
Increase in bleeding time and delay in blood coagulation is due to the deficiency of which hormone?
  • Thyroxine
  • Adrenaline
  • Noradrenaline
  • Parathormone
Synthesis of lipids and steroids SER in the cells of testis and ovary and cortex of adrenal gland is concerned with the synthesis of steroid hormones and lipids.
  • True
  • False
Thickening the lining of the uterus each month in female body is the function of which of the following hormone?
  • LH
  • FSH
  • Progesterone
  • Oxytocin
The bile duct and the pancreatic duct open together into the duodenum as the common hepatopancreatic duct which  is guarded by a sphincter called .........
  • Pyloric sphincter 
  • Sphincter of Oddi
  • Ileocecal Sphincter
  • Anal Sphincter
Which of the following hormone is correctly matched with it's source and function?
  • Vasopressin - Anterior pituitary - Induces reabsorption of water in nephron
  • Oxytocin - Anterior pituitray - Contraction in uterine muscles during birth (parturation)
  • Thymosin - Thymus - Helps in differentiation of T - Lymphocyte
  • Glucagon - Pancreatic $$ \alpha $$ cells- Induces the uptake of utilization of glucose inside cells
"Pinealocytes cells" occurs in 
  • Pineal body
  • Pituitary gland
  • Adrenal gland
  • Thyroid gland
Grave's disease is due to
  • Hyperactivity of thyroid gland
  • Hypoactivity of adrenal cortex
  • Hyperactivity of adrenal medulla
  • Hypoactivity of Islet of langerhans
The regression in size of which organ is associated with reduction in the power of defence against invasion by pathogens with ageing?
  • Bone marrow
  • Thymus
  • Spleen
  • Peyer's patches
A person without thymus would not be able to
  • Reject a tissue transplant
  • Receive a tissue transplant
  • Develop an inflammatory response
  • Produce antibodies
Match the following.
Sr.noColumn -ISr.noColumn -II
A.Testosterone1.Sexual contraction in male
B.Atrial natriuretic  factor 2.Decrease in blood  pressure
C.Glucagon 3.Decrease in liver glycogen content 
D.Epinephrine 4.Increases in heartbeat 
  • A-1, B-2, C-3, D-4
  • A-1, B-3, C-2, D-4
  • A-3, B-4, C-1, D-2
  • A-3, B-4, C-2, D-1
Which of these hormones may have a primary role in many circadian rhythms?
  • Insulin
  • Estradiol
  • Melatonin
  • Epinephrine
Which hormone is known as the emergency hormone in our body?
  • Insulin
  • Adrenaline Hormones
  • Androgen
  • Oxytocin and vasopressin
Adrenaline is often described as the emergency hormone.
  • True
  • False
How many of the given hormones act on the target cells by binding to intracellular receptors?
a. Iodothyronines 
b. Somatostatin 
c. Estradiol 
d. Cortisol 
e. Oxytocin 
f. Aldosterone 
  • Two
  • Three
  • Four
  • Five
Melatonin is modified
  • Amino acid
  • Peptide
  • Steroid
  • Protein
Increase in ........... hormone levels results in the sensation of hunger and motivation to consume food.
  • Leptin
  • Ghrelin
  • Nectin
  • Calcitonin
Parathormone influences calcium absorption in the small intestine by regulating the metabolism of
  • Vitamin C
  • Vitamin D
  • Vitamin $$B_{6}$$
  • Enterogasterone
Which hormone has the anti-insulin effect?
  • Calcitonin
  • Cortisol
  • Oxytocin
  • Aldosterone
Mucus, saliva, earwax, oil, milk, digestive enzymes, bile juice, tear, cortisol, androgen, HCL, thymosin, rennin, Pancreatic juice

How many of them are secreted by exocrine glands?
  • Twelve
  • Three
  • Eight
  • Nine
Which of the following is NOT produced by kidneys?
  • Calcitriol
  • Erythropoietin
  • Angiotensinogen
  • Renin
Which one controls the secretion of estrogen?
  • hCG
  • Progesteron
  • LH
  • FSH
Action of the peptide hormone on a target cell is mediated by
  • A cytoplasmic receptor
  • Cyclic AMP
  • ATP
  • Epinephrin
Renin-angiotensin-aldosterone system secretes which of the following hormone?
  • Mineralocorticoids
  • Glucocorticoids
  • Both A and B
  • Peptide hormones
At cellular level, GH affects growth by controlling the production of
  • r-RNA
  • t-RNA
  • m-RNA
  • None of the above
Which one of the following four glands is correctly matched with the accompanying description?
  • Thyroid - Hyperactivity in young children causes cretinism
  • Thymus - Starts undergoing atrophy after puberty
  • Parathyroid - Secretes parathormone, which promotes movement of calcium ions from blood into bones during ossification.
  • Pancreas - Delta cells of the islets of Langerhans secrete a hormone which stimulates glycolysis in liver
Adrenaline is equivalent to which neurotransmitter?
  • GABA
  • Serotonin
  • Epinephrine
  • None of the abaove
Match List I with List II and select the correct option.
List I
List II
A. Adrenaline
Myxoedema
B. Hyperparathyroidism
Accelerates heartbeat
C. Oxytocin
Salt-water balance
D. Hypothyroidism
Childbirth
E. Aldosterone
Demineralisation 
  • A- 2, B- 5, C- 4, D- 1, E- 3
  • A- 3, B- 4, C- 5, D- 3, E- 2
  • A- 5, B- 3, C- 2, D- 4, E- 1
  • A- 2, B- 3, C- 4, D- 5, E- 1
  • A- 5, B- 3, C- 4, D- 2, E- 1
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