Chemical Coordination & Integration Q BANK
CHEMICAL COORDINATION & INTEGRATION Q BANK Question and answer based on strictly latest NCERT based pattern, and previous year NEET (AIPMT) question. chapter wise approach mcq is more useful for quick revision and increase speed for maintaining time period.
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MCQ:-
Q1) GnRH, a hypothalamic hormone, needed in reproduction, acts on (NEET 2017)
Anterior pituitary gland & stimulates secretion of LH & oxytocin
Anterior pituitary gland & stimulates secretion of LH & FSH
Posterior pituitary gland & stimulates secretion of oxytocin & FSH
Posterior pituitary gland & stimulates secretion of LH & relaxin
Answer- Anterior pituitary gland & stimulates secretion of LH & FSH
Q2) Hypersecretion of growth hormone in adults does not cause further increase in height because (NEET 2017)
Growth hormone becomes inactive in adults
Epiphyseal plates close after adolescence
Bones loose their sensitivity to growth hormone in adults
Muscle fibres do not grow in size after birth
Answer- Epiphyseal plates close after adolescence
Q3) The amino acid, tryptophan is the precursor for the synthesis of (NEET 2016, PHASE I)
Thyroxine & tri-iodothyronine
Oestrogen & progesterone
Cortisol & cortisone
Melatonin & serotonin
Answer- Melatonin & serotonin
Q4) Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other? (NEET 2016, PHASE I)
Insulin Glucagon
Aldosterone Atrial Natriuretic Factor
Relaxin Inhibin
Parathormone Calcitonin
Answer- Relaxin Inhibin
Q5) Name a peptide hormone which acts mainly on hepatocytes, adipocytes & enhances cellular glucose uptake & utilisation? (NEET 2016, PHASE II)
Insulin
Glucagon
Secretin
Gastrin
Answer- Insulin
Q6) The posterior pituitary gland is not a true’ endocrine gland because (NEET 2016, PHASE II)
It is provided with a duct
It only stores & releases hormones
It is under the regulation of hypothalamus
It secretes enzymes
Answer- It only stores & releases hormones
Q7) Graves’ disease is caused due to (NEET 2016, PHASE II)
Hyposecretion of thyroid gland
Hypersecretion of thyroid gland
Hyposecretion of adrenal gland
Hypersecretion of adrenal gland
Answer- Hypersecretion of thyroid gland
Q8) Which one of the following hormones is not involved in sugar metabolism? (CBSE AIPMT 2015)
Cortisone
Aldosterone
Insulin
Glucagon
Answer- Aldosterone
Q9) Which one of the following hormones though synthesised elsewhere, is stored & released by the master gland? (CBSE AIPMT 2015)
Antidiuretic hormone
Luteinizing hormone
Prolactin
Melanocyte-stimulating hormone
Answer- Antidiuretic hormone
Q10) Identify the hormone with its correct matching of source & function (CBSE AIPMT 2014)
Oxytocin- Posterior pituitary, growth & maintenance of mammary glands
Melatonin- Pineal gland, regulates the normal rhythm of sleepwake cycle
Progesterone- Corpus luteum, stimulation of growth & activities of female secondary sex organs
Atrial natriuretic factor- Ventricular wall increases the blood pressure
Answer- Melatonin- Pineal gland, regulates the normal rhythm of sleep-wake cycle
Q11) Fight or flight reactions cause activation of (CBSE AIPMT 2014)
The parathyroid gland, leading to increased metabolic rate
The kidney, leading to suppression of reninangiotensin- aldosterone pathway
The adrenal medulla, leading to increased secretion of epinephrine & norepinephrine
The pancreas leading to a reduction in the blood sugar levels
Answer- The adrenal medulla, leading to increased secretion of epinephrine & norepinephrine
Q12) A pregnant female delivers a baby, who suffers from stunted growth, mental retardation low intelligence quotient & abnormal skin. This is the result of (NEET 2013)
Deficiency of iodine in diet
Low secretion of growth hormone
Cancer of the thyroid gland
Over secretion of pars distalis
Answer- Deficiency of iodine in diet
Q13) Which of the following statement is correct in relation to the endocrine system? (NEET 2013)
Adenohypophysis is under direct neural regulation of the hypothalamus
Organs in the body like gastrointestinal tract, heart, kidney & liver do not produce any hormone
Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones
Releasing & inhibitory hormone are produced by the pituitary gland
Answer- Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones
Q14) Select the answer which correctly matches the endocrine gland with the hormone it secretes & its function/deficiency symptom (NEET 2013)
Endocrine gland Hormone Function/Deficiency
Symptoms
Anterior Oxytocin stimulates uterus
Pituitary contraction during
Child birth
Posterior Growth Oversecretion
Pituitary Hormone stimulates
(GH) abnormal growth
Thyroid Thyroxine Lack of iodine in
Gland diet results in goitre
Corpus Testosterone stimulates
Luteum spermatogenesis
Answer- Thyroid gland Thyroxine Lack of iodine in
Diet results in
Goitre
Q15) A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neurohormonal control system? (CBSE AIPMT 2012)
Sympathetic nervous system is activated releasing epinephrine & norepinephrine from adrenal medulla
Neurotransmitters diffuses rapidly across the cleft & transmit a nerve impulse
Hypothalamus activates the parasympathetic division of brain
Sympathetic nervous system is activated releasing epinephrine & norepinephrine from adrenal cortex
Answer- Sympathetic nervous system is activated releasing epinephrine & norepinephrine from adrenal medulla
Q16) 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 & bind to a receptor inside it (mostly in the nucleus) ? (CBSE AIPMT 2012)
Insulin & glucagon
Thyroxin & insulin
Somatostatin & oxytocin
Cortisol & testosterone
Answer- Cortisol & testosterone
Q17) What is correct to say about the hormone action in humans? (CBSE AIPMT 2012)
Glucagon is secreted by β-cells of islets of Langerhans & stimulates glycogenolysis
Secretion of thymosine is stimulated with ageing
In females, FSH first binds with specific receptors on ovarian cell membrane
FSH stimulates the secretion of oestrogen & progesterone
Answer- In females, FSH first binds with specific receptors on ovarian cell membrane
Q18) Match the source gland with its respective hormones as well as function (CBSE AIPMT 2011)
Source Hormone Function
Gland
Posterior Vasopressin stimulates
Pituitary resorption of water
In the distal tubules
In the nephron
Corpus Oestrogen supports pregnancy
Luteum
Thyroid Thyroxine regulates blood
Calcium level
Anterior Oxytocin contraction of
Pituitary uterus muscles
During child birth
Answer- Posterior Vasopressin stimulates
Pituitary resorption of water
In the distal tubules
In the nephron
Q19) Given ahead is an incomplete table about certain hormones, their source glands & one major effect of each on the body in humans. Identify the correct option for the three blanks A, B & C. (CBSE AIPMT 2011)
Gland Secretion Effect on body
A Oestrogen Maintenance of secondary
Sexual characters
Alpha cells B Raises blood sugar
Of Islets of level
Langerhans
Anterior C Over secretion leads
Pituitary to gigantism
A B C
Placenta Insulin Vasopressin
Ovary Insulin Calcitonin
Placenta Glucagon Calcitonin
Ovary Glucagon Growth hormone
Answer- Ovary Glucagon Growth hormone
Q20) Which one of the following pairs is incorrectly matched? (CBSE AIPMT 2010)
Glucagon – Beta cells (source)
Somatostatin – Delta cells (source)
Corpus luteum – Relaxin (secretion)
Insulin – Diabetes mellitus (disease)
Answer- Glucagon – Beta cells (source)
Q21) Toxic agents present in food which interfere with thyroxin synthesis lead to the development of (CBSE AIPMT 2010)
Toxic goitre
Cretinism
Simple goitre
Thyrotoxicosis
Answer- Simple goitre
Q22) A health disorder that results from the deficiency of thyroxin in adults & characterised by (CBSE AIPMT 2009)
A low metabolic rate
Increase in body weight
Tendency to retain water in tissues is
Hypothyroidism
Simple goitre
Myxoedema
Cretinism
Answer- Myxoedema
Q23) Foetal ejection reflex in human female is induced by (CBSE AIPMT 2009)
The pressure exerted by amniotic fluid
Release of oxytocin from the pituitary
fully developed fetus & placenta
Differentiation of mammary glands
Answer- Release of oxytocin from the pituitary
Q24) Which one of the following pairs of organs includes only the endocrine glands? (CBSE AIPMT 2008)
Parathyroid & adrenal
Pancreas & parathyroid
Thymus & testes
Adrenal & ovary
Answer- Parathyroid & adrenal
Q25) The blood calcium level is lowered by the deficiency of (CBSE AIPMT 2008, 1999)
Parathormone
Thyroxine
Calcitonin
Both (a) & (c)
Answer- Parathormone
Q26) In human adult females, oxytocin (CBSE AIPMT 2008)
Is secreted by anterior pituitary
Stimulates growth of mammary glands
Stimulates pituitary to secrete vasopressin
Causes strong uterine contraction during parturition
Answer- Causes strong uterine contraction during parturition
Q27) Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoried building starts climbing down the stairs rapidly. Which hormone initiated this action? (CBSE AIPMT 2007)
Thyroxin
Adrenaline
Glucagon
Gastrin
Answer- Adrenaline
Q28) In the human female, menstruation can be deferred by the administration of (CBSE AIPMT 2007)
LH only
Combination of FSH & LH
Combination of estrogen & progesterone
FSH only
Answer- Combination of estrogen & progesterone
Q29) A person is having problems with calcium & phosphorous metabolism in his body. Which one of the following glands may not be functioning properly? (CBSE AIPMT 2007)
Parathyroid
Parotid
Pancreas
Thyroid
Answer- Parathyroid
Q30) Compared to a bull a bullock is docile because of (CBSE AIPMT 2007)
Higher levels of thyroxin
Higher levels of cortisone
Lower levels of blood testosterone
Lower levels of adrenaline/noradrenaline in its blood
Answer- Lower levels of blood testosterone
Q31) Withdrawl of which of the following hormones is the immediate cause of menstruation? (CBSE AIPMT 2006)
Oestrogen
FSH
FSH-RH
Progesterone
Answer- Progesterone
Q32) Which hormone causes dilation of blood vessels, increased oxygen consumption & glucogenesis? (CBSE AIPMT 2006)
ACTH
Insulin
Adrenaline
Glucagon
Answer- Adrenaline
Q33) Sertoli cells are regulated by the pituitary hormone known as (CBSE AIPMT 2006)
FSH
GH
Prolactin
LH
Answer- FSH
Q34) A steroid hormone which regulates glucose metabolism is (CBSE AIPMT 2006)
Cortisol
Corticosterone
11-deoxycorticosterone
Cortisone
Answer- Cortisol
Q35) Which of the following is an accumulation & release center of neurohormones? (CBSE AIPMT 2006)
Posterior pituitary lobe
Intermediate lobe of the pituitary
Hypothalamus
Anterior pituitary lobe
Answer- Hypothalamus
Q36) Chemically hormones are (CBSE AIPMT 2004)
Biogenic amines only
Proteins, steroids & biogenic amines
Proteins only
Steroids only
Answer- Proteins, steroids & biogenic amines
Q37) Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency? (CBSE AIPMT 2004)
Luteinising hormone – Failure of ovulation
Insulin – Diabetes insipidus
Thyroxine – Tetany
Parathyroid hormone – Diabetes mellitus
Answer- Luteinising hormone- Failure of ovulation
Q38) Which of the following hormones is not a secretion product of human placenta? (CBSE AIPMT 2004)
Human chorionic gonadotropin
Prolactin
Oestrogen
Progesterone
Answer- Prolactin
Q39) Which one of the following hormones is a modified amino acid? (CBSE AIPMT 2004)
Epinephrine
Progesterone
Prostaglandin
Oestrogen
Answer- Epinephrine
Q40) Acromegaly is caused by (CBSE AIPMT 2002)
Excess of STH
Excess of thyroxin
Deficiency of thyroxin
Excess of adrenaline
Answer- Excess of STH
Q41) Mainly which type of hormones control the menstrual cycle in human beings? (CBSE AIPMT 2002)
FSH
LH
FSH, LH, estrogen
Progesterone
Answer- FSH,LH,estrogen
Q42) When both ovaries are removed from a rat which hormone is decreased in blood? (CBSE AIPMT 2002)
Oxytocin
Prolactin
Estrogen
Gonadotropic releasing factor
Answer- Estrogen
Q43) Melanin protects from (CBSE AIPMT 2002)
UV-rays
Visible rays
Infra-red rays
X-rays
Answer- UV-rays
Q44) Adrenaline directly affects (CBSE AIPMT 2002)
SA node
Β-cells of Langerhans
The dorsal root of spinal cord
Epithelial cells of the stomach
Answer- SA node
Q45) Which steroid is used for transformation? (CBSE AIPMT 2002)
Cortisol
Cholesterol
Testosterone
Progesterone
Answer- Cholesterol
Q46) Melatonin is secreted by (CBSE AIPMT 2000)
Skin
Thymus
Pituitary
Pineal gland
Answer- Pineal gland
Q47) Melanocyte Stimulating Hormone (MSH) is produced by (CBSE AIPMT 2000)
Anterior pituitary
Posterior pituitary
Pars intermedia of the pituitary
Parathyroid
Answer- Pars intermedia of the pituitary
Q48) A common scent-producing gland among mammals is (CBSE AIPMT 2000)
Anal gland
Prostate gland
Adrenal gland
Bartholin’s gland
Answer- Anal gland
Q49) Secretion of progesterone by corpus luteum is initiated by (CBSE AIPMT 1999)
Thyroxine
LH
MSH
Testosterone
Answer- LH
Q50) The gonadotropic hormone is produced by (CBSE AIPMT 1999)
Interstitial cells of testes
Adrenal cortex
Adenohypophysis of pituitary
Posterior part of the thyroid
Answer- Adenohypophysis of pituitary
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