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Q. No.Second messengers, employed in the action on target cells in case of some hormones, include all the following except:
1. cAMP
2. Calcium
3. IP3
4. Catabolite Activator Protein
Subtopic: Mechanism of Hormone Action |
87%
From NCERT
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Which hormone, secreted by the small intestinal mucosa in response to fatty chyme, causes contraction of the gall bladder?
1. Secretin
2. Cholecystokinin
3. Gastric inhibitory peptide
4. Gastrin
1. Secretin
2. Cholecystokinin
3. Gastric inhibitory peptide
4. Gastrin
Subtopic: Hormones of Heart, Kidney and Gastrointestinal Tract |
86%
From NCERT
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The posterior pituitary is:
| 1. | under the direct neural regulation of the hypothalamus |
| 2. | under the regulation of the chemicals produced by the hypothalamus |
| 3. | is not under any regulation of the hypothalamus |
| 4. | is regulated directly by the humoral concentrations of the hormones it secretes |
Subtopic: Prolactin & Posterior Pituitary |
88%
From NCERT
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After ovulation, the ruptured follicle is converted to a structure called corpus luteum, which secretes mainly:
1. Oestrogen
2. Progesterone
3. DHEA
4. Corticosterone
1. Oestrogen
2. Progesterone
3. DHEA
4. Corticosterone
Subtopic: Misc. Hormones |
94%
From NCERT
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If the adenohypophysis fails to stop producing growth hormone (GH) after body growth is completed, the person may suffer from:
1. Cretinism
2. Dwarfism
3. Acromegaly
4. Gigantism
1. Cretinism
2. Dwarfism
3. Acromegaly
4. Gigantism
Subtopic: Pituitary & Hypothalamus |
51%
From NCERT
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Which hypothalamic hormones are stored in and released from the posterior pituitary?
1. ADH and Prolactin
2. Oxytocin and Somatostatin
3. ADH and Oxytocin
4. Somatostatin and Somatomedin
1. ADH and Prolactin
2. Oxytocin and Somatostatin
3. ADH and Oxytocin
4. Somatostatin and Somatomedin
Subtopic: Prolactin & Posterior Pituitary |
89%
From NCERT
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Addison’s disease is caused by:
1. Hyperthyroidism
2. Hypothyroidism
3. Hyperadrenalism
4. Hypoadrenalism
Subtopic: Adrenal Cortex: Aldosterone |
70%
From NCERT
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Identify the correct statements:
1. Only I
2. Only I and II
3. Only III
4. I, II and II
| I: | Non-steroid hormones are produced by the adrenal glands, the ovaries, and the testes. |
| II: | Non-steroid peptide hormones enter the cell. |
| III: | Steroid hormones do not bind to plasma membrane receptors. |
2. Only I and II
3. Only III
4. I, II and II
Subtopic: Mechanism of Hormone Action |
84%
From NCERT
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Identify the incorrectly matched pair:
1. I, II and III only
2. II, III and IV only
3. II, III and V only
4. II, III, IV and V only
| I | Excess of growth hormone in adulthood | Acromegaly |
| II | Deficiency of growth hormone in childhood | Cretinism |
| III | A deficiency of thyroid hormones in adults | Exophthalmic goitre |
| IV | Deficiency of ADH | Production of excess urine with glycosuria |
| V | Underproduction of hormones by the adrenal cortex | Addison’s disease |
2. II, III and IV only
3. II, III and V only
4. II, III, IV and V only
Subtopic: Prolactin & Posterior Pituitary | Thyroid Gland Part I | Thyroid Gland Part II | Pancreas: I | Pancreas: II |
69%
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Given below are the pathways for control of a body function by two hormones to maintain homeostasis. Identify the correct ones:
A: A decrease in blood calcium leads to secretion of parathyroid hormone by the parathyroid gland that causes an increase in blood calcium level; an increase in blood calcium level leads to secretion of thyrocalcitonin by thyroid gland that causes a decrease in blood calcium level.
B: A decrease in GFR blood flow/blood pressure causes release of rennin and formation of angiotensin II that causes vasodilation correcting GFR; an increase in blood flow to atria/blood pressure causes release of ANF that causes vasoconstriction.
C: A decrease in blood glucose leads to secretion of glucagon which retards the uptake of blood glucose by body cells; an increase in blood glucose leads to secretion of insulin that promotes the uptake of glucose by body cells.
1. Only A and B
2. Only A and C
3. Only B and C
4. A, B and C
A: A decrease in blood calcium leads to secretion of parathyroid hormone by the parathyroid gland that causes an increase in blood calcium level; an increase in blood calcium level leads to secretion of thyrocalcitonin by thyroid gland that causes a decrease in blood calcium level.
B: A decrease in GFR blood flow/blood pressure causes release of rennin and formation of angiotensin II that causes vasodilation correcting GFR; an increase in blood flow to atria/blood pressure causes release of ANF that causes vasoconstriction.
C: A decrease in blood glucose leads to secretion of glucagon which retards the uptake of blood glucose by body cells; an increase in blood glucose leads to secretion of insulin that promotes the uptake of glucose by body cells.
1. Only A and B
2. Only A and C
3. Only B and C
4. A, B and C
Subtopic: Thyroid Gland Part I | Thyroid Gland Part II | Parathyroid | Pancreas |
73%
From NCERT
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