Q. No.| I: | provides a point-to-point rapid coordination among organs. |
| II: | is fast but short-lived. |
| III: | innervate all cells of the body. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Match each item in Column I [Hormone] with one in Column II [Chemical class] and select your answer from the codes given:
|
Column I |
|
Column II |
|
|
A. |
ACTH |
a. |
Peptide |
|
B. |
Estradiol |
b. |
Steroid |
|
C. |
Thyroxine |
c. |
Amino-acid derived |
|
D. |
Epinephrine |
d. |
Iodothyronine |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | a | b | d | c |
| 3. | b | a | d | c |
| 4. | b | a | c | d |
Which pair of hormones will both bind to membrane bound receptors located on its target cells?
1. Epinephrine and thyroxine
2. Calcitonin and glucagon
3. Estradiol and triiodothyronine
4. Adrenaline and aldosterone
All the following are common second messengers involved in hormonal actions except:
1. Cyclic adenosine monophosphate
2. Inositol phosphate
3. Prostaglandins
4. Calcium
Hormones which interact with intracellular receptors:
1. generate second messengers
2. depolarize the membrane of the target cells
3. stop the enzymatic actions of membrane proteins
4. regulate gene expression
Some hormones can act on their target cells through second messengers. Identify the one that does not:
| 1. | cortisol | 2. | adrenaline |
| 3. | FSH | 4. | calcitonin |
| Assertion (A): | The receptors for insulin are located inside the cell. |
| Reason (R): | Insulin is lipid soluble. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False |
| 3. | Both (A) and (R) are False |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| I: | include steroid hormones and iodothyronines. |
| II: | mostly regulate gene expression or chromosome function by the interaction of hormone-receptor complex with the genome. |
2. Both I and II are incorrect
3. I is correct, II is incorrect
4. I is incorrect, II is correct
| I: | Binding of a hormone to its receptor leads to the formation of a hormone-receptor complex. |
| II: | Each receptor is specific to one hormone only and hence receptors are specific. |
| III: | Hormone-Receptor complex formation leads to certain biochemical changes in the target tissue. |
2. Only I and III
3. Only II and III
4. I, II and III
| Assertion (A): | Steroid hormones act by entering the cell and directly influencing the expression of target genes. |
| Reason (R): | Steroid hormones bind to the surface receptors and activate second messenger systems. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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