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I. Insulin II. Epinephrine III. Oestradiol IV. Norepinephrine V. Testosterone VI. Glucagon Which of the above hormones are amino acid derivatives? |
|
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a) |
I and II |
|
b) |
III and IV |
|
c) |
V and VI |
|
d) |
II and IV |
|
I. Insulin II. Epinephrine III. Oestradiol IV. Norepinephrine V. Testosterone VI. Glucagon Which of the above hormones are amino acid derivatives? |
|
|
a) |
I and II |
|
b) |
III and IV |
|
c) |
V and VI |
|
d) |
II and IV |
(d)
Biochemical classification of hormones
|
Chemical Nature |
Origin |
Examples |
|
1. Biogenic amines or amino acid derivatives |
Derival from tyrosine |
Thyroxin-e, adrenalin-e, noradrenaline and melatoni-n |
|
2. Proteinaceou-s or polypeptide |
Chains of amino acid |
Hypothalamic hormones, ACTH, GH, vasopressin, oxytocin, parathor-mone, calcitonin, MSH, etc. |
|
3. Glycoproteinaceous |
Protein + carbohydr-ates |
Thyrotro-pin, FSH, LH |
|
4. Steroid |
Derived from cholestero-l |
Sex hormone and adrenoco-rticoids |