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NEET • BIOLOGY • CHEMICAL COORDINATION AND INTEGRATION
Chemical coordination and integration practice · Mixed difficulty
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61
Medium
61 of 381
Understanding
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Steroid hormones easily pass through the plasma membrane by simple diffusion because they
View answer and explanation
Correct option: D
Are lipid soluble
Option D (Are lipid soluble) is correct because steroid hormones are lipid-soluble, allowing them to diffuse through the plasma membrane.
62
Medium
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Analyzing
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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: FSH acts upon ovarian follicles in female and Leydig cells in male.
Reason R: Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in
male human being.
In the light of the above statements, choose the correct answer from the options given below:
Assertion A: FSH acts upon ovarian follicles in female and Leydig cells in male.
Reason R: Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in
male human being.
In the light of the above statements, choose the correct answer from the options given below:
View answer and explanation
Correct option: C
A is false but R is true
Option C (A is false but R is true) is correct because FSH acts on Sertoli cells in males, not Leydig cells, and the Reason accurately describes estrogen and androgen secretion.
63
Easy
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Remembering
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Which one of the following is the hormone of adrenal medulla?
View answer and explanation
Correct option: D
Epinephrine
Option D (Epinephrine) is correct because epinephrine (adrenaline) is a hormone secreted by the adrenal medulla.
64
Easy
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Understanding
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Presence of which of the following conditions in urine is indicative of Diabetes mellitus.
View answer and explanation
Correct option: B
Ketonuria and Glycosuria
Option B (Ketonuria and Glycosuria) is correct because the presence of ketones and glucose in the urine are indicative of Diabetes mellitus.
65
Easy
65 of 381
Remembering
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Reabsorption of water in DCT and CT part of nephron is function of
View answer and explanation
Correct option: C
Vasopressin
Option C (Vasopressin) is correct because vasopressin (ADH) regulates water reabsorption in the DCT and collecting tubules of the nephron.
66
Easy
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Remembering
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Glucagon is secreted by
View answer and explanation
Correct option: C
α-cells of islets of Langerhans
Option C (α-cells of islets of Langerhans) is correct because glucagon is secreted by alpha cells of the islets of Langerhans in the pancreas.
67
Medium
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Remembering
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Depict the correct line of the hormone
View answer and explanation
Correct option: A
α-glucagon, β- insulin, δ-somatostatin
Option A (α-glucagon, β- insulin, δ-somatostatin) is correct because alpha cells secrete glucagon, beta cells secrete insulin, and delta cells secrete somatostatin in the Islets of Langerhans.
68
Medium
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Remembering
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Which hormone maintain the sleep-wake cycle
View answer and explanation
Correct option: A
Melatonin
Option A (Melatonin) is correct because melatonin, secreted by the pineal gland, plays a crucial role in regulating the sleep-wake cycle.
69
Hard
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Remembering
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Select an ovarian hormone, which requires secondary messenger for their action.
View answer and explanation
Correct option: C
Relaxin
The correct answer is C (Relaxin) because it uses a secondary messenger system for its action, unlike steroid hormones.
70
Medium
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Remembering
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Which of the following is correct
View answer and explanation
Correct option: B
Diabetes - Sugar free
Option B (Diabetes - Sugar free) is correct because diabetes management often involves a sugar-free or low-sugar diet.
71
Medium
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Analyzing
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Assertion: Insulin stimulates glycogenolysis
and gluconeogenesis resulting in
hyperglycemia.
Reason: Prolonged hyperglycemia leads to
complex disorder called diabetes insipidus.
and gluconeogenesis resulting in
hyperglycemia.
Reason: Prolonged hyperglycemia leads to
complex disorder called diabetes insipidus.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because insulin stimulates glycogenesis (not glycogenolysis) and inhibits gluconeogenesis, resulting in hypoglycemia, and diabetes insipidus is related to ADH, not hyperglycemia.
72
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Remembering
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Neurons of people suffering from diabetes insipidus do not secrete
View answer and explanation
Correct option: D
ADH
Option B (PTH and TCT) is correct because PTH (parathyroid hormone) increases blood calcium levels, while TCT (thyrocalcitonin or calcitonin) decreases blood calcium levels, thus maintaining calcium balance.
73
Medium
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Remembering
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I. aldosterone, II. norephinephrine, III. Sexcorticoids, , . IV. Mineralocorticoids V. Glucocorticoids. Among the given hormone those anti inflammatory effects are
View answer and explanation
Correct option: D
Only V
Option D is correct because glucocorticoids have anti-inflammatory effects.
74
Easy
74 of 381
Remembering
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The function of pineal body is to
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because the pineal gland influences skin pigmentation, sexual behavior, and the timing of puberty through melatonin secretion.
75
Medium
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Remembering
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Pituitary gland is also called I. smallest endocrinal gland, II. master endocrine gland, III. hypophysis. Choose the correct combination
View answer and explanation
Correct option: C
I, II and III
Option C is correct because the pituitary gland is indeed the smallest endocrine gland, the master endocrine gland, and is also known as the hypophysis.
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76
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Understanding
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What effect does insulin have in a normal human body?
View answer and explanation
Correct option: B
It stimulates formation of glycogen in the liver
Option B (It stimulates formation of glycogen in the liver) is correct because insulin promotes the conversion of glucose to glycogen in the liver, thus lowering blood sugar.
77
Easy
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Remembering
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Thymosin is responsible for
View answer and explanation
Correct option: C
Increased production of T-lymphocytes
Option C (Increased production of T-lymphocytes) is correct because thymosin promotes the differentiation and maturation of T-lymphocytes, which are crucial for cell-mediated immunity.
78
Medium
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Remembering
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Releasing hormone and inhibiting hormones are produced by
View answer and explanation
Correct option: C
Hypothalamus
The correct answer is Hypothalamus because it produces releasing and inhibiting hormones that control the anterior pituitary gland.
79
Easy
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Understanding
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ADH deficiency shows which of the following condition?
View answer and explanation
Correct option: B
Polyuria
Option B (Polyuria) is correct because ADH (Antidiuretic Hormone) deficiency leads to diabetes insipidus, characterized by excessive urine production (polyuria).
80
Hard
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Remembering
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Bradykinin is a
View answer and explanation
Correct option: B
Hormone
Option B (Hormone) is correct because bradykinin is a peptide hormone involved in inflammation and blood pressure regulation.
81
Medium
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Understanding
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Read the statements given below identify which of them are true and which of them are false. Select the correct option after referring to the given table
A. The pituitary gland is present in a bony cavity of the skull knows as sella tursica
B. The pancreas is only an endocrine gland
C. The diurnal rhythm of the body is maintained by the pineal gland
D. Glucocorticoids stimulate glycolysis, lipolysis and proteolysis
A. The pituitary gland is present in a bony cavity of the skull knows as sella tursica
B. The pancreas is only an endocrine gland
C. The diurnal rhythm of the body is maintained by the pineal gland
D. Glucocorticoids stimulate glycolysis, lipolysis and proteolysis
View answer and explanation
Correct option: A
A-True, B-False, C-True, -False
Option A (A-True, B-False, C-True, D-False) is correct because the pituitary gland is in the sella turcica, the pancreas is both endocrine and exocrine, the pineal gland maintains diurnal rhythm, and glucocorticoids stimulate gluconeogenesis, not glycolysis.
82
Medium
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Remembering
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Somatostatin from hypothalamus glands
View answer and explanation
Correct option: B
Inhibits the release of growth hormone
Option B (Inhibits the release of growth hormone) is correct because somatostatin from the hypothalamus inhibits the secretion of growth hormone from the pituitary gland.
83
Easy
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Understanding
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Compared to a bull, a bullock is docile because of
View answer and explanation
Correct option: C
Lower levels of blood testosterone
Option C (Lower levels of blood testosterone) is correct because castration reduces testosterone levels, leading to decreased aggression and docility.
84
Medium
84 of 381
Remembering
+4 | -1
Secretion is under control of neurosecretory nerve axons in
View answer and explanation
Correct option: D
Posterior pituitary
Option D (Posterior pituitary) is correct because the posterior pituitary releases hormones synthesized by hypothalamic neurons, and their secretion is directly controlled by neurosecretory nerve axons.
85
Medium
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Analyzing
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Assertion : Females have less stature than males
after puberty.
Reason : This happens because of the presence
of hCG in the blood of females.
after puberty.
Reason : This happens because of the presence
of hCG in the blood of females.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because females generally have less stature than males after puberty, but this is due to hormonal differences (estrogen causing earlier epiphyseal plate closure), not hCG.
86
Easy
86 of 381
Remembering
+4 | -1
Which of the following hormones are secreted by pancreas?
View answer and explanation
Correct option: A
Insulin and glucagon
Option A (Insulin and glucagon) is correct because these are the two primary hormones secreted by the pancreas to regulate blood sugar levels.
87
Easy
87 of 381
Remembering
+4 | -1
FSH (Follicle stimulating hormone) is produced by
View answer and explanation
Correct option: B
Anterior pituitary lobe
Option B (Anterior pituitary lobe) is correct because FSH is produced and secreted by the anterior pituitary gland.
88
Hard
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Understanding
+4 | -1
When immunoglobulins are synthesised in the body against the bodies own cells, certain disorders are produced. Which of the following is not an example of such a disorder?
View answer and explanation
Correct option: C
Toxic nodular goitre
The correct answer is C (Toxic nodular goitre) because it is not primarily caused by autoantibodies, unlike the other options.
89
Medium
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Remembering
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Polydipsia means …A…
Polyphagia means …B…
Glycosuria means …C…
Choose the correct option for A, B and C
Polyphagia means …B…
Glycosuria means …C…
Choose the correct option for A, B and C
View answer and explanation
Correct option: A
A-Excessive thirst, B-Excessive eating, C-Glucose in urine
Option A (A-Excessive thirst, B-Excessive eating, C-Glucose in urine) is correct because it accurately defines the terms polydipsia, polyphagia, and glycosuria.
90
Medium
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Remembering
+4 | -1
Endemic goitre is state of
View answer and explanation
Correct option: C
Decreased thyroid function
Option C (Decreased thyroid function) is correct because endemic goiter is caused by iodine deficiency, leading to hypothyroidism and thyroid enlargement.
Revision notes and key takeaways
Review CHEMICAL COORDINATION AND INTEGRATION in your textbook or class notes, then use this set to check your understanding.
Showing 61-90 of 381 questions