Biochemistry (Hormones Set 1)

1 / 25

Hormone that bind to cell surface receptor
and require the second messenger camp is :

A) Antidiuretic hormone

B) Cholecystokinin

C) Calcitriol

D) Gastrin

2 / 25

Excessive secretion of ACTH causes :

A) Cushing’s syndrome

B) Addison’s disease

C) Myxoedema

D) Thyrotoxicosis

3 / 25

All mammalian steroid hormones are formed from :

A) Purine

B) Pyrimidine

C) Cholesterol

D) Pyrrole

4 / 25

The number of amino acids in prolactin is :

A) 134

B) 146

C) 172

D) 199

5 / 25

Hormones :

A) Act as coenzyme

B) Act as enzyme

C) Influence synthesis of enzymes

D) Belong to B-complex group

6 / 25

Cushing’s syndrome-a tumour associated disease of adrenal cortex, there is :

A) Decreased epinephrine production

B) Excessive cortisol production

C) Excessive epinephrine production

D) Decreased cortsoil production

7 / 25

Adrenocorticotropic hormone (ACTH) is a
single polypeptide containing :

A) 25 amino acid

B) 39 amino acid

C) 49 amino acid

D) 52 amino acid

8 / 25

ACTH induces rise in :

A) Cyclic AMP

B) Cyclic GMP

C) Calcium

D) Magnesium

9 / 25

A specific cortisol binding protein, transcortin is a :

A) Albumin

B) α1-Globulin

C) α2-Globulin

D) β-Globulin

10 / 25

Biological activity of ACTH requires :

A) 10-N-terminal amino acid

B) 24-N-terminal amino acid

C) 24-C-terminal amino acid

D) 15-C-terminal amino acid

11 / 25

A hormone secreted from anterior pituitary is :

A) Growth hormone

B) Vasopressin

C) Oxytocin

D) Epinephrine

12 / 25

Growth hormone is released by :

A) Somatostatin

B) Growth hormone releasing hormone

C) Prolactin release inhibiting hormone

D) Luteinizing releasing hormone

13 / 25

Cortisol is synthesized in :

A) Zona fasiculata

B) Zona glomerulosa

C) Zona reticularis

D) Chromaffin cells

14 / 25

In adrenal gland the cholesterol is stored :

A) Mostly in the free form

B) Mostly in esterified form

C) Large amount of free form and less amount of esterified form

D) Equal amounts of free and esterified form

15 / 25

The number of amino acids in human growth hormone is :

A) 91

B) 151

C) 191

D) 291

16 / 25

The circulating concentration of ACTH in plasma is :

A) 0.05 mµ/100 m

B) 0.1–2.0 mµ/100 ml

C) 2.5–3.5 mµ/100 ml

D) 3.0–5.0 mµ/100 ml

17 / 25

ACTH stimulates the secretion of :

A) Glucocorticoids

B) Epinephrine

C) Thyroxine

D) Luteinizing hormone

18 / 25

Hormone that binds to intracellular receptor is :

A) Adrenocorticotropic hormone

B) Thyroxine

C) Follicle stimulating hormone

D) Glucagon

19 / 25

Aldosterone synthesis occurs in :

A) Zona reticularis

B) Zona fasciculata

C) Zona glomerulosa

D) Chromaffian cells

20 / 25

A hormone secreted from posterior pituitary is :

A) Vasopressin

B) Thyrotropic hormone

C) Prolactin

D) Adrenocorticotropic hormone

21 / 25

Growth hormone causes hyperglycemia. It is a result of :

A) Decreased peripheral utilization of glucose

B) Decreased hepatic production via gluconeogenes

C) Increased glycolysis in muscle

D) Decrersed lipolysis

22 / 25

The predominant glucocorticoid is :

A) Cortisol

B) Aldosterone

C) Dehydroephiandrosterone

D) Androstenedione

23 / 25

Hyperglycemic effect of glucocorticoids is due to :

A) Inactivation of protein phosphatase

B) Inactivation of fructose 1,6-biphosphatase

C) Stimulation of synthesis of pyruvate carboxylase

D) Stimulation of synthesis of eltroxykinase

24 / 25

A very efficient inhibitor of steroid biosynthesis is :

A) Aminoglutethimide

B) Aminoimidazole

C) Aminoimidazolesuccinyl carboxamine

D) Aminopterin

25 / 25

Acromegaly results due to excessive release of :

A) Thyroxine

B) Growth hormone

C) Insulin

D) Glucagon

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Hormones Questions Set 1

Hormones Questions Set 1

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