Which of one ring in the structure of the following is aromatic? (A) Androgens (B) Estrogens (C) Cholesterol (D) Bile acids

Which of one ring in the structure of the following is aromatic? (A) Androgens (B) Estrogens (C) Cholesterol (D) Bile acids
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A major structural difference between estrogens and androgens is the fact that (A) The androgens are usually C21 steroids (B) The estrogens are usually digitonin - precipitable (C) The androgens have an aromatic ring (D) The estrogens have an aromatic ring

Description : A major structural difference between estrogens and androgens is the fact that (A) The androgens are usually C21 steroids (B) The estrogens are usually digitonin - precipitable (C) The androgens have an aromatic ring (D) The estrogens have an aromatic ring

Last Answer : Answer : D

Stein-leventhal syndrome is due to overproduction of (A) Estrogens (B) Androgens (C) Gastogens (D) Ethinyl estradiol

Description : Stein-leventhal syndrome is due to overproduction of (A) Estrogens (B) Androgens (C) Gastogens (D) Ethinyl estradiol

Last Answer : Answer : B

Which of the following hormones is primarily responsible for stimulating the production of progesterone? a) Luteinizing hormone Luteinizing hormone is released by the pituitary gland. b) Follicle-stimulating hormone Follicle-stimulating hormone is responsible for stimulating the ovaries to secrete estrogen. c) Estrogen Estrogens are responsible for developing and maintaining the female reproductive tract. d) Androgen Androgens, secreted in small amounts by the ovaries, are involved in early development of the follicle and also affect the female libido.

Description : Which of the following hormones is primarily responsible for stimulating the production of progesterone? a) Luteinizing hormone Luteinizing hormone is released by the pituitary gland. b) Follicle-stimulating ... , are involved in early development of the follicle and also affect the female libido.

Last Answer : a) Luteinizing hormone Luteinizing hormone is released by the pituitary gland.

Hypolipidemic drugs reduce serum cholesterol and triacylglycerol. The effect of clofibrate is attributed to (A) Block in absorption from G.I.T. (B) Decrease in secretion of triacylglycerol and cholesterol containing VLDL by liver (C) Block in the reabsorption of bile acids (D) Decreased synthesis of cholesterol

Description : Hypolipidemic drugs reduce serum cholesterol and triacylglycerol. The effect of clofibrate is attributed to (A) Block in absorption from G.I.T. (B) Decrease in secretion of triacylglycerol and cholesterol ... by liver (C) Block in the reabsorption of bile acids (D) Decreased synthesis of cholesterol

Last Answer : Answer : B

Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Description : Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Last Answer : Answer : A

Cholesterol is the precursor for the biosynthesis of (A) fatty acid (B) prostaglandins (C) bile acids (D) sphingmyelin

Description : Cholesterol is the precursor for the biosynthesis of (A) fatty acid (B) prostaglandins (C) bile acids (D) sphingmyelin

Last Answer : Answer : C

Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. Bile salts are detergents, amphiphilic molecules, i.e., molecules with a polar water-soluble portion and a non-polar fat-soluble portion. This feature allows bile salts to enclose fats inside water-soluble micelles in a process called emulsification for them to be in contact with intestinal lipases, enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Last Answer : What is the adnexal organ of the digestive system in which bile is stored?

Metabolic actions of estrogens tend to cause the following except: A. Anabolism B. Impaired glucose tolerance C. Rise in plasma LDL-cholesterol D. Salt and water retention

Description : Metabolic actions of estrogens tend to cause the following except: A. Anabolism B. Impaired glucose tolerance C. Rise in plasma LDL-cholesterol D. Salt and water retention

Last Answer : C. Rise in plasma LDL-cholesterol

Cyclohexane does not belong to aromatic class even though it has a ring structure. How do you justify this?

Description : Cyclohexane does not belong to aromatic class even though it has a ring structure. How do you justify this?

Last Answer : Cyclohexane is a saturated hydrocarbon in which the carbon atoms are joined by single covalent bonds to form a ring where as in aromatic hydrocarbons have alternate single and double bonds. Hence Cyclohexane is does not belong to aromatic class.

What is the ring structure present in cholesterol?

Description : What is the ring structure present in cholesterol?

Last Answer : Perhydro cyclo pentano phenanthrene ring.

A coenzyme containing aromatic hetero ring is (A) TPP (B) Lipoic acid (C) Coenzyme Q (D) Biotin

Description : A coenzyme containing aromatic hetero ring is (A) TPP (B) Lipoic acid (C) Coenzyme Q (D) Biotin

Last Answer : Answer : A

A coenzyme containing non aromatic hetero ring is (A) ATP (B) NAD (C) FMN (D) Biotin

Description : A coenzyme containing non aromatic hetero ring is (A) ATP (B) NAD (C) FMN (D) Biotin

Last Answer : Answer : D

Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Description : Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Last Answer : Answer : D

Cholesterol is excreted as such into ________. (A) Urine (B) Faeces (C) Bile (D) Tears FATS AND FATTY ACID METABOLISM 99

Description : Cholesterol is excreted as such into ________. (A) Urine (B) Faeces (C) Bile (D) Tears FATS AND FATTY ACID METABOLISM 99

Last Answer : Answer : C

Main metabolic end product of cholesterol: (A) Coprosterol (B) 5-pregnenolone (C) Bile acid (D) Glycine

Description : Main metabolic end product of cholesterol: (A) Coprosterol (B) 5-pregnenolone (C) Bile acid (D) Glycine

Last Answer : Answer : C

The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Description : The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Last Answer : Answer : B

Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids

Description : Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids

Last Answer : Answer : C

Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids

Description : Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids

Last Answer : Answer : C

Aromatic amino acids can be detected by (A) Sakaguchi reaction (B) Millon-Nasse reaction (C) Hopkins-Cole reaction (D) Xanthoproteic reaction

Description : Aromatic amino acids can be detected by (A) Sakaguchi reaction (B) Millon-Nasse reaction (C) Hopkins-Cole reaction (D) Xanthoproteic reaction

Last Answer : Answer : D

The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues

Description : The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues

Last Answer : Answer : A

Give the names of aromatic amino acids.

Description : Give the names of aromatic amino acids.

Last Answer : Phenylalanine and tyrosine.

The principal rate limiting step in the biosynthesis of bile acids is at the (A) 7-Hydroxylase reaction (B) 12 α-Hydroxylase reaction (C) Conjugation reaction (D) Deconjugation reaction

Description : The principal rate limiting step in the biosynthesis of bile acids is at the (A) 7-Hydroxylase reaction (B) 12 α-Hydroxylase reaction (C) Conjugation reaction (D) Deconjugation reaction

Last Answer : Answer : A

Ascorbic acid is required to synthesise all of the following except (A) Collagen (B) Bile acids (C) Bile pigments (D) Epinephrine

Description : Ascorbic acid is required to synthesise all of the following except (A) Collagen (B) Bile acids (C) Bile pigments (D) Epinephrine

Last Answer : Answer : C

A compound normally used to conjugate bile acids is (A) Serine (B) Glycine (C) Glucoronic acid (D) Fatty acid

Description : A compound normally used to conjugate bile acids is (A) Serine (B) Glycine (C) Glucoronic acid (D) Fatty acid

Last Answer : Answer : B

In human and other ureotelic organisms, the end product of amino acid nitrogen metabolism: (A) Bile acids (B) Ketone bodies (C) Urea (D) Barium sulphate

Description : In human and other ureotelic organisms, the end product of amino acid nitrogen metabolism: (A) Bile acids (B) Ketone bodies (C) Urea (D) Barium sulphate

Last Answer : Answer : C

The basic amino acids are (A) Lysine (B) Bile acids (C) Glycine (D) Alanine

Description : The basic amino acids are (A) Lysine (B) Bile acids (C) Glycine (D) Alanine

Last Answer : Answer : A

The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Description : The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Last Answer : A

Bile acids are derived from what substance?

Description : Bile acids are derived from what substance?

Last Answer : Cholesterol.

What is the function of bile acids?

Description : What is the function of bile acids?

Last Answer : They are the major route of excretion of cholesterol and they are required for absorption of triacyl glycerol.

The secondary sexual characters in females is effected by (A) Estrogens (B) Gluco corticoids (C) MIS (D) None of these

Description : The secondary sexual characters in females is effected by (A) Estrogens (B) Gluco corticoids (C) MIS (D) None of these

Last Answer : Answer : A

A common intermediate in the synthesis of estrogens is (A) Cortisol (B) Andostenedione (C) Corticosterone (D) 11-Deoxycorticosterone

Description : A common intermediate in the synthesis of estrogens is (A) Cortisol (B) Andostenedione (C) Corticosterone (D) 11-Deoxycorticosterone

Last Answer : Answer : B

Secretion of androgens is increased by (A) LH (B) FSH (C) ACTH (D) Growth hormone

Description : Secretion of androgens is increased by (A) LH (B) FSH (C) ACTH (D) Growth hormone

Last Answer : Answer : A

The metabolites of androgens are (A) 17-Hydroxysteroids (B) 17-Ketosteroids (C) 11-Hydroxysteroids (D) 11-Ketosteroids

Description : The metabolites of androgens are (A) 17-Hydroxysteroids (B) 17-Ketosteroids (C) 11-Hydroxysteroids (D) 11-Ketosteroids

Last Answer : Answer : B

Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Description : Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Last Answer : Answer : A

In adrenogenital syndrome due to total absence of 21-hydroxylase in adrenal cortex, there is (A) Deficient secretion of glucocorticoids (B) Deficient secretion of mineralcorticoids (C) Excessive secretion of androgens (D) All of these

Description : In adrenogenital syndrome due to total absence of 21-hydroxylase in adrenal cortex, there is (A) Deficient secretion of glucocorticoids (B) Deficient secretion of mineralcorticoids (C) Excessive secretion of androgens (D) All of these

Last Answer : Answer : D

Zona glomerulosa of adrenal cortex synthesises (A) Glucocorticoids (B) Mineralocorticoids (C) Androgens (D) Estrogen and progesterone HORMONE METABOLISM 223

Description : Zona glomerulosa of adrenal cortex synthesises (A) Glucocorticoids (B) Mineralocorticoids (C) Androgens (D) Estrogen and progesterone HORMONE METABOLISM 223

Last Answer : Answer : A

Urinary 17 ketosteroids (A) Are not found in women (B) Reflect the total production of androgenic substances (C) Indicate the total production of sex hormone (D) Are highly active androgens

Description : Urinary 17 ketosteroids (A) Are not found in women (B) Reflect the total production of androgenic substances (C) Indicate the total production of sex hormone (D) Are highly active androgens

Last Answer : Answer : B

Androgens are produced by (A) Cells of sertoli (B) Leydig cells (C) Rete testis (D) Efferent ductules

Description : Androgens are produced by (A) Cells of sertoli (B) Leydig cells (C) Rete testis (D) Efferent ductules

Last Answer : Answer : B

Fluorination of an aromatic ring is easily accompolished by treating a diazonium salt with `HBF_4`. Which of the following conditions is correct about

Description : Fluorination of an aromatic ring is easily accompolished by treating a diazonium salt with `HBF_4`. Which of the following conditions is correct about

Last Answer : Fluorination of an aromatic ring is easily accompolished by treating a diazonium salt with `HBF_4`. Which of the ... O //H_(2)O` D. `NaF//Cu`

Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Description : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. ... (I) is: A. B. C. D.

Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Description : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This ... (2)` D. `.^(*)C Cl_(3)`

Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Description : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph

Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. ... ` D. aq. `NaOH + C Cl_(4)`

The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Description : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (I) is : A. B. C. D.

The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Description : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (H) is : A. B. C. D.

The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Description : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho

Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (G) is : A. B. C. D.

The yellow colour of urine is due to presence of – (1) Bile (2) Lymph (3) Cholesterol (4) Urochrorne

Description : The yellow colour of urine is due to presence of – (1) Bile (2) Lymph (3) Cholesterol (4) Urochrorne

Last Answer : (4) Urochrorne Explanation: The color of normal urine is usually light yellow to amber. Generally, the greater the solute volume the deeper the color. The yellow color of urine is due to the ... normal color can be caused by certain drugs and various vegetables such as carrots, beets, and rhubarb.

Select the hypocholesterolemic drug which interferes with intestinal absorption of bile salts and cholesterol, and secondarily increases cholesterol turnover in the liver: A. Gemfibrozil B. Cholestyramine C. Lovastatin D. Bezafibrate

Description : Select the hypocholesterolemic drug which interferes with intestinal absorption of bile salts and cholesterol, and secondarily increases cholesterol turnover in the liver: A. Gemfibrozil B. Cholestyramine C. Lovastatin D. Bezafibrate

Last Answer : B. Cholestyramine