NEET Biology MCQ - Chemical Coordination And Regulation Mcq - Quiz-10 Solution

Q.1.

Prostaglandins have no role in

25%
a) smooth muscle contraction
25%
b) inflammatory and allergic reactions
25%
c) blood clotting
25%
d) conduction of nerve impulses.

Explanation

Q.2.

Estrogen and testosterone are steroid hormones and are most likely to bind to:

0%
a) Membrane ion channels.
36%
b) Enzyme linked membrane receptors.
55%
c) G protein linked membrane receptors.
9%
d) Intracellular receptors.

Explanation

Q.3.

Choose the mismatched pair from the following:

20%
a) Thymosin – Peptide.
30%
b) Thyrocalcitonin – Iodothyronin.
30%
c) Atrial natriuretic factor – Peptide
20%
d) Epinephrine – Amino acid derivative.

Explanation

Q.4.

Write full form of ACTH?

25%
a) Adrenal Cortical Tropic hormone
25%
b) Adrenocortico Target hormone
12%
c) Adrenocortex Tropic hormone
38%
d) Adrenocortico Tropic hormone

Explanation

Q.5.

Which one of the following pairs correctly matched a hormone with a disease resulting its deficiency?

33%
a) Insulin – Diabetes insipidus.
33%
b) Relaxin – Gigantism.
22%
c) Prolactin – Cretinism.
11%
d) Parathormone – Tetany.

Explanation

Q.6.

Which of the following is correct for somatotropic hormone?

0%
a) Optimal secretion of it can retards protein synthesis
71%
b) Less secretions of it causes Giantism
14%
c) More secretion of it causes Dwarfism
14%
d) In adult, its more secretion causes enlargement of lower jaw

Explanation

Q.7.

By which structure, hypothalamus is connected with anteriore lobe of pituitary gland?

12%
a) Bands of white fibres from cerebellar region
12%
b) Dendrites of neurohypophysis
38%
c) Axons of neurohypophysis
38%
d) Hypophysial portal system

Explanation

Q.8.

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/ deficiency symptom .. [NEET 2013] Explanation provided, click on

Endocrine gland ;	Hormone	Function/deficiency symptoms
(1) Anterior pituitary	Oxytocin	Stimulates uterus contraction during child birth
(2) Posterior pituitary	Growth Hormone (GH)	Over secretion stimulates abnormal growth
(3) Thyroid gland	Thyroxine	Lack of iodine in diet results in goitre
(4) Corpus luteum	Testosterone	Stimulates spermatogenesis;

29%
a) (1)
29%
b) (2)
43%
c) (3)
0%
d) (4)

Explanation

Q.9.

Graves' disease is caused due to :- …[NEET 2016] Explanation provided, click on

29%
a) Hyposecretion of adrenal gland
29%
b) Hypersecretion of adrenal gland
29%
c) Hyposecretion of thyroid gland
14%
d) Hypersecretion of thyroid gland

Explanation

Q.10.

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilization. …[NEET 2016] Explanation provided, click on

14%
a) Secretin
29%
b) Gastrin
43%
c) Insulin
14%
d) Glucagon

Explanation

Q.11.

The posterior pituitary gland is not a 'true' endocrine gland because :- …[NEET 2016] Explanation provided, click on

0%
a) It is under the regulation of hypothalamus
14%
b) It secretes enzymes
43%
c) It is provided with a duct
43%
d) It only stores and releases hormones

Explanation

Q.12.

GnRH, a hypothalamic hormone, needed in reproduction, acts on ….[NEET- 2017] Explanation provided, click on

0%
a) Anterior pituitary gland and stimulates secretion of LH and oxytocin
43%
b) Anterior pituitary gland and stimulates secretion of LH and FSH
57%
c) Posterior pituitary gland and stimulates secretion of oxytocin and FSH
0%
d) Posterior pituitary gland and stimulates secretion of LH and relaxin

Explanation

Q.13.

Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland ? [ ReAIPMT 2015] Explanation provided, click on

0%
a) Melanocyte stimulating hormone
43%
b) Antidiuretic hormone
57%
c) Luteinizing hormone
0%
d) Prolactin

Explanation

Q.14.

A decrease in blood pressure/volume will not cause the release of ….[NEET- 2017] Explanation provided, click on

14%
a) Renin
29%
b) Atrial Natriuretic Factor
29%
c) Aldosterone
29%
d) ADH

Explanation

Q.15.

Hypersecretion of Growth Hormone in adults does not cause further increase in height, because ….[NEET- 2017] Explanation provided, click on

29%
a) Growth Hormone becomes inactive in adults
43%
b) Epiphyseal plates close after adolescence
29%
c) Bones loose their sensitivity to Growth Hormone in adults
0%
d) Muscle fibres do not grow in size after birth

Explanation

Q.16.

Which one of the following hormones is not involved in sugar metabolism ? [ ReAIPMT 2015] Explanation provided, click on

0%
a) Glucagon
29%
b) Cortisone
43%
c) Aldosterone
29%
d) Insulin

Explanation

Q.17.

Which one of the following hormones is not involved in sugar metabolism ? [ ReAIPMT 2015] Explanation provided, click on

12%
a) Glucagon
25%
b) Cortisone
25%
c) Aldosterone
38%
d) Insulin

Explanation

Q.18.

ormones secreted by the placenta to maintain pregnancy are [NEET 2018] Explanation provided, click on

40%
a) hCG, hPL, progestogens, prolactin
40%
b) hCG, hPL, estrogens, relaxin, oxytocin
20%
c) hCG, hPL, progestogens, estrogens
0%
d) hCG, progestogens, estrogens, glucocorticoids

Explanation

Q.19.

Which of the following is an amino acid derived hormone ? … … [NEET 2018] Explanation provided, click on

40%
a) Epinephrine
20%
b) Ecdysone
20%
c) Estradiol
20%
d) Estriol

Explanation

Q.20.

The hormone which regulates the basal metabolism in our body is secreted from:

0%
a) Pancreas.
40%
b) Pituitary.
20%
c) Adrenal cortex.
40%
d) Thyroid.

Explanation

Q.21.

Hyperglycemia is characterised by: (i) Polydipsia. (ii) Ketosis. (iii) Frequent urination. (iv) Increased blood cholesterol level.

0%
a) (ii) and (iii) only.
80%
b) (i), (ii) and (iv) only.
0%
c) (i), (ii) and (iii) only.
20%
d) (i), (ii), (iii) and (iv).

Explanation

Q.22.

What is cause of exophthalmic goiter?

20%
a) Oversecretion of parathroid
0%
b) Under secretion of parathyroid
80%
c) Less secretion of thyroid
0%
d) Oversecretion of thyroid

Explanation

Q.23.

Pancreas is a Heterocrine gland found near abdomen in the abdominal region of the body. Its endocrine part contains Islets of Langerhans. Which one is true regarding the same?

60%
a) Beta cells secrete somatostatin and promote gluconeogenesis.
20%
b) Delta cells secrete insulin and inhibit glucogenolysis.
20%
c) Alpha cells secrete glucagon and promote glycogenesis.
0%
d) Alpha cells secrete glucagon and promote lipolysis and proteolysis.

Explanation

Q.24.

How many parathyroid glands are present in humans?

20%
a) 1
0%
b) 2
60%
c) 3
20%
d) 4

Explanation

Q.25.

Under secretion of which hormone can cause diabetes mellitus?

0%
a) ADH
40%
b) Aldesterone
40%
c) Vasopressin
20%
d) Insulin

Explanation

Q.26.

Which of the following is not primary endocrine gland?

0%
a) Thymus
75%
b) Parathyroid gland
0%
c) Adrenal medulla
25%
d) Corpus luteum

Explanation

Q.27.

Find out the correct statement:

40%
a) Glucagon prevents the breakdown of glycogen into glucose in liver.
0%
b) Somatostatin promote the secretion of glucagon and insulin.
40%
c) β cells of Islets of Langerhans secrets the hormone glucagon.
20%
d) Pineal gland functions as biological clock and a neurosecretory transducer.

Explanation

Q.28.

Hypersecretion of Parathormone results in:

0%
a) No effect on the constitution of bones.
25%
b) Deposition of calcium in various skeletal structure.
75%
c) Stronger bones due to increased incorporation of calcium in them.
0%
d) Weaker bones due to increased removal of calcium from them.

Explanation

Q.29.

How many features are applicable to hormones? (i) Non – nutrient chemicals. (ii) Intracellular messengers. (iii) Released in blood or open spaces. (iv) Produced in trace amount.

20%
a) None.
40%
b) One.
20%
c) Two.
20%
d) Three.

Explanation

Q.30.

Type II diabetes mellitus occurs due to the deficiency/absence of:

0%
a) Glucagon receptors
0%
b) Alpha cells
80%
c) Beta cells.
20%
d) Insulin receptors.

Explanation

Q.31.

Which one of the following is proteinaceous in nature?

20%
a) Oxytocin.
0%
b) FSH.
80%
c) Thyroxine.
0%
d) Progesterone.

Explanation

Q.32.

Statement x: There is one hormone receptor for insulin and glucogen Statement y: Hormone receptors are specific

0%
a) x and y are correct and y is correct explanation of x
60%
b) x and y are correct and y is not correct explanation of x
40%
c) x is correct and y is wrong
0%
d) y is correct and x is wrong

Explanation

Q.33.

Which option shows self regulating hormone ?

20%
a) Insulin, glucagon, Mineralocorticoids oxytocin
0%
b) Insulin, glucagon oxytocin
40%
c) Insulin LH Mineralocorticoids
40%
d) None of the given

Explanation

Q.34.

Read the following statements and choose the incorrect one:

20%
a) Parathormone and Thyrocalcitonin shows antagonistic effects.
0%
b) Conn’s syndrome occurs due to the Hypersecretion of aldosterone.
60%
c) Zona glomerulosa is the outer layer of adrenal cortex and it mainly helps in the secretion of Glucocorticoids.
20%
d) Osteitis fibrosa cystica is the formation of cyst like brown tumours in and around the bone.

Explanation

Q.35.

Thyroid gland function is best monitored by:

25%
a) Total thyroxine.
25%
b) Level of protein bound iodine.
50%
c) BMR.
0%
d) Level of TSH in blood.

Explanation

Q.36.

Hormones reach their target organs via:

0%
a) ICF.
0%
b) Lymph.
75%
c) Ducts.
25%
d) Blood.

Explanation

Q.37.

Myxoedema in adults is characterised by:

20%
a) Loss in body weight.
20%
b) A low metabolic rate.
20%
c) Tendency to retain water in tissues.
40%
d) Both (B) and (C).

Explanation

Q.38.

Glucagon and insulin are :

0%
a) Secreted from same cell and are same in function
0%
b) Antagonistic secretion action and similar function
50%
c) Secreted from same cells but are opposite in function
50%
d) Secreted from different cells but are opposite in function

Explanation

Q.39.

Chemically the hormones are :

0%
a) Proteins only
0%
b) Biogenic amines only
40%
c) Steroids only
60%
d) Proteins, steroids and biogenic amines.

Explanation

Q.40.

Assertion: Hormones that use membrane bound receptors regulate gene action. Reason: Hormones that use intercellular receptors regulate cellular metabolism.

0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
80%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
0%
c) Assertion is true but Reason is false.
20%
d) Both Assertion and Reason are false.

Explanation

Q.41.

Which of the following hormone is related with the pigmentation of skin?

25%
d) MSH.
50%
a) ACTH.
0%
b) FSH.
25%
c) LSH

Explanation

Q.42.

Which of the given statement is correct for delta cells secretion and function?

0%
a) Melatonin; stimulate Insulin
50%
b) Insulin; stimulates glucose conversion in to glycogen
50%
c) Somatostatin; stimulates GH
0%
d) Somatostatin; Inhibits GH

Explanation

Q.43.

Which of the following hormones produce synergistic effect?

25%
a) Estrogen, Relaxin and Testosterone.
75%
b) ACTH, MSH and hGH.
0%
c) Glucagon, Insulin and Somatostatin.
0%
d) Estrogen, Progesterone and Prolactin.

Explanation

Q.44.

Identify the wrong statement regarding the chemical nature of hormones:

0%
a) Steroid hormones produced by gonads and adrenal cortex.
50%
b) Catecholamines are produced by adrenal medulla.
50%
c) Tropic hormones are mainly proteins.
0%
d) FSH and LH belong to nanopeptide hormones.

Explanation

Q.45.

Statement x: Many physiological reactions and developemental processes are affected by steroid hormone Statement y: As they regulate gene expression by interaction of membrane bound receptors complex

25%
a) x and y are correct and y is correct explanation of x
75%
b) x and y are correct and y is not correct explanation of x
0%
c) x is correct and y is wrong
0%
d) y is correct and x is wrong

Explanation

Q.46.

It is steroid hormone of thyroid

0%
a) TCT
0%
b) T3
50%
c) T4
50%
d) None of the given

Explanation

Q.47.

A hormone that has intracellular receptors would be

0%
a) Melatonin.
75%
b) ADH.
25%
c) ACTH.
0%
d) Aldosterone.

Explanation

Q.48.

How many hormones given below are secreted by placenta? (i) Progesterone. (ii) Estrogen. (iii) Relaxin. (iv) hCG. (v) hPL.

0%
a) Two.
0%
b) Three.
75%
c) Four.
25%
d) Five.

Explanation

Q.49.

Which hormone is control by nerve axon of hypothalamus

0%
a) ACTH and TSH
50%
b) TSH
25%
c) ACTH
25%
d) Oxytocin

Explanation

Q.50.

Choose the option which has hyperglycemic hormone, hypercalcemic hormone and catecholamines respectively:

25%
a) ACTH, Thyroxine, Progesterone.
25%
b) Adrenaline, FSH, Norepinephrine.
50%
c) TCT, Thyroxine, Adrenaline.
0%
d) Glucagon, PTH, Epinephrine.

Explanation

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