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Q. No.Pineal secretes a hormone called:
1. melanin, a derivative of tyrosine.
2. melatonin, a derivative of tryptophan
3. MSH, a peptide hormone
4. MDPA, a steroid
Subtopic: Pineal Gland |
83%
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Consider the given statements:
1. Statement I is incorrect; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Thyroid follicular cells synthesise three hormones: thyroxine, triiodothyronine and thyrocalcitonin. |
| Statement II: | Iodine is essential for the normal rate of hormone synthesis in the thyroid. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Thyroid Gland Part I |
From NCERT
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How many of the given statements are correct:
| I: | Thyroid hormones play an important role in the regulation of the basal metabolic rate. |
| II: | Thyroid hormones are most important factors that affect the process of red blood cell formation. |
| III: | Thyroid hormones control the metabolism of carbohydrates but not of proteins and fats. |
| IV: | Maintenance of water and electrolyte balance is also influenced by thyroid hormones. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Thyroid Gland Part I | Thyroid Gland Part II |
From NCERT
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The secretion of PTH is regulated by:
1. hypothalamic releasing and inhibiting hormones
2. pituitary tropin hormone
3. the circulating levels of calcium ions
4. thyrocalcitonin
1. hypothalamic releasing and inhibiting hormones
2. pituitary tropin hormone
3. the circulating levels of calcium ions
4. thyrocalcitonin
Subtopic: Parathyroid |
78%
From NCERT
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Consider the given two statements:
| Assertion (A): | The immune responses of old persons become weak. |
| Reason (R): | Thymus is degenerated in old individuals resulting in a decreased production of thymosins. |
| 1. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Thymus |
94%
From NCERT
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Addison’s disease is caused by:
1. Underproduction of hormones by the thyroid
2. Underproduction of hormones by the adrenal medulla
3. Underproduction of hormones by the adrenal cortex
4. Underproduction of hormones by the pituitary
1. Underproduction of hormones by the thyroid
2. Underproduction of hormones by the adrenal medulla
3. Underproduction of hormones by the adrenal cortex
4. Underproduction of hormones by the pituitary
Subtopic: Adrenal Cortex: Cortisol |
85%
From NCERT
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How many of the following will be the functions of adrenaline and noradrenaline?
| I: | increase in heart rate |
| II: | decrease in the strength of heart contraction |
| III: | increase in the rate of respiration |
| IV: | glycogenolysis |
| V: | breakdown of lipids and proteins |
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Subtopic: Adrenal Medulla |
72%
From NCERT
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Which of the following produces anti-inflammatory reactions and suppresses the immune response?
| 1. | Thyroxine | 2. | Thymosin |
| 3. | Cortisol | 4. | Aldosterone |
Subtopic: Adrenal Cortex: Cortisol |
80%
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Aldosterone:
| 1. | acts mainly at the renal tubules and stimulates the excretion of Na+ and water and reabsorption of K+ and phosphate ions. |
| 2. | acts mainly at the renal tubules and stimulates the reabsorption of Na+ and water and excretion of K+ and phosphate ions. |
| 3. | acts mainly at the collecting duct and stimulates the excretion of Na+ and water and reabsorption of K+ and phosphate ions. |
| 4. | acts mainly at the collecting duct and stimulates the reabsorption of Na+ and water and excretion of K+ and phosphate ions. |
Subtopic: Adrenal Medulla | Adrenal Cortex: Aldosterone |
83%
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Consider the two statements:
| Assertion (A): | Insulin causes decreased blood glucose levels (hypoglycemia). |
| Reason (R): | Insulin acts mainly on hepatocytes and adipocytes (cells of adipose tissue), and enhances cellular glucose uptake and utilisation. |
| 1. | (A) is True; (R) is False |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | Both (A) and (R) are True and (R) correctly explains (A) |
| 4. | (A) is False; (R) is True |
Subtopic: Pancreas: I | Pancreas: II | Pancreas |
87%
From NCERT
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