Description : What are the important substances derived from PUFA?
Last Answer : Prostaglandins, prostacycline, thromboxanes, leukotienes, HPETE.
Description : The term antibiotic was coined by _________to refer to antimicrobial substances naturally derived from _______. a. Waksman; bacteria and fungi b. Domagk; other living organisms c. Fleming; fungi and bacteria d. Ehrlich; bacteria
Last Answer : c. Fleming; fungi and bacteria
Last Answer : Cholesterol is derived from cholesterol.
Description : Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin
Last Answer : (d) Inulin, insulin
Description : The daily total body water derived from oxidation of food stuffs is about (A) 100 ml (B) 300 ml (C) 600 ml (D) 1000 ml
Last Answer : Answer : B
Description : Water derived in gm from complete oxidation of each gm of carbohydrate is about (A) 0.15 (B) 0.25 (C) 0.35 (D) 0.55
Last Answer : Answer : D
Description : The four nitrogen atoms of purines are derived from (A) Urea and NH3 (B) NH3, Glycine and Glutamate (C) NH3, Asparate and Glutamate (D) Aspartate, Glutamine and Glycine
Description : In purine nucleus nitrogen atom at 1 position is derived from (A) Aspartate (B) Glutamate (C) Glycine (D) Alanine
Last Answer : Answer : A
Description : Which one of the following hormones is derived most completely from tyrosine? (A) Glucagon (B) Thyroxine (C) Insulin (D) Prostaglandins
Description : Thyroxine is derived from (A) Tyrosine (B) Tyranine (C) Taurine (D) Tryptaine
Description : Epinephrine is derived from norepinephrine by (A) Decarboxylation (B) Hydroxylation (C) Oxidation (D) N-methylation
Description : Coenzymes FMN and FAD are derived from vitamin (A) C (B) B6 (C) B1 (D) B2
Description : Coenzymes derived from the vitamin shown below are required by which of the following enzymes? (A) Lactate dehydrogenase (B) Glutamate dehydrogenase (C) Pyruvate dehydrogenase (D) Malate dehydrogenase
Last Answer : Answer : C
Description : Coenzymes derived from the vitamin shown below are required by enzymes involved in the synthesis of which of the following? (A) ATP (B) UTP (C) CTP (D) NADH
Description : Which one of the following enzymes requires a coenzyme derived from the vitamin whose structure is shown below? (A) Enoyl CoA hydratase (B) Phosphofructokinase (C) Glucose-6-phosphatase (D) Glucose-6-phosphate dehydrogenase
Description : Glycerol-3-phosphate for the synthesis of triglycerides in adipose tissue is derived from (A) Phosphatidic acid (B) Diacylglycerol (C) Glycerol (D) Glucose
Description : The glycerol for fatty acid esterification in adipocytes is (A) For the most part, derived from glucose (B) Obtained primarily from phosphorylation of glycerol by glycerol kinase (C) Formed from gluconeogenesis (D) Formed from glycogenolysis ENZYMES 153
Description : In erythrocytes, 2, 3-biphosphoglycerate is derived from the intermediate: (A) Glyeraldehyde-3-phosphate (B) 1, 3-Biphosphoglycerate (C) 3-Phosphoglycerate (D) 2-Phosphoglycerate
Description : Gangliosides derived from glucosylceramide contain in addition one or more molecules of (A) Sialic acid (B) Glycerol (C) Diacylglycerol (D) Hyaluronic acid
Description : Seratonin is derived in the body from the following amino acid: (A) Phenylalanine (B) Histidine (C) Tryptophan (D) Serine
Description : Prostaglandins are derived from what substance?
Last Answer : Prostaglandins are derived from the PUFA. The Series 2 (with two double bonds) are derived from arachidonic acid. All naturally occurring PGs belong to the 2-series.
Description : Bile acids are derived from what substance?
Last Answer : Cholesterol.
Description : Give examples of derived amino acids.
Last Answer : Hydroxy proline, hydroxy lysine, ornithine, cit- rulline, homocysteine.
Description : Osmotically active substances in plasma are (A) Sodium (B) Chloride (C) Proteins (D) All of these
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
Description : For conjugation with many enogenous and exogenous substances before elimination in urine, the uronic acid pathway provides (A) Active glucuronate (B) Gulonate (C) Xylulose (D) Xylitol
Description : All of the following substances have been used to estimate GFR except (A) Inulin (B) Creatinine (C) Phenol red (D) Mannitol FATS AND FATTY ACID METABOLISM 105
Description : Proteinous substances which catalyze biochemical reactions are known as (A) Activators (B) Catalysts (C) Enzymes (D) Hormones
Description : Non-protein nitrogenous substances in blood are raised in (A) Starvation (B) Liver damage (C) Renal failure (D) All of these
Description : Non-protein nitrogenous substances in blood include all of the following except (A) Urea (B) Uric acid (C) Creatinine (D) Inositol
Description : Blood group substances consist of (A) Lactose (B) Maltose (C) Fructose (D) Mucose
Last Answer : C
Description : The carbohydrate of the blood group substances is (A) Sucrose (B) Fucose (C) Arabinose (D) Maltose
Last Answer : B
Description : The fo l low ing substances are ce l l inclusions except (A) Melanin (B) Glycogen (C) Lipids (D) Centrosome
Last Answer : D
Description : HMGCoA is directly converted into what substances?
Last Answer : Acetoacetate, acetyl CoA, mevalonate.
Description : What substances will prevent fatty liver?
Last Answer : Choline, methionine, lecithin.
Description : Succinyl CoA is generated from which substances?
Last Answer : Odd chain fatty acids, propionic acid, valine, isoleucine, threonine.
Description : What are the reducing substances seen in urine?
Last Answer : Glucose, fructose, lactose, galactose, pentoses, ascorbic acid, glucuronides.
Description : Can you name some substances where D-amino acids are seen?
Last Answer : D-amino acids are seen in cell walls of micro-or- ganisms and as constituents of certain antibiotics such as gramicidin-S, polymyxin, actinomycin-D and valinomycin
Last Answer : (B) Fucose
Description : Steroid hormones are synthesized from (A) Adenine (B) Protein (C) Vitamin (D) Cholesterol
Description : Which of one ring in the structure of the following is aromatic? (A) Androgens (B) Estrogens (C) Cholesterol (D) Bile acids
Description : Steroid hormones are synthesised from (A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholesterol
Description : Precursor of ACTH is (A) Cholesterol (B) Pregnenolone (C) Corticotropin (D) Pro-opiomelanocortin
Description : In the biosynthesis of testosterone the rate limiting step is conversion of (A) Cholesterol to pregnenolone (B) Pregnenolone to progesterone (C) Progesterone to 17 α-hydroxy progesterone (D) 17 α-Hydroxy progesterone to androstenedione
Description : 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
Description : All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole
Description : ‘Clearing factor’ is (A) Lipoprotein lipase (B) Crotonase (C) 7-dehydro cholesterol (D) β-sitosterol
Description : The major source of extracellular cholesterol for human tissue is (A) Very low density lipoprotein (B) High density lipoprotein (C) Low density lipoprotein (D) Albumin
Description : In biosynthesis of cholesterol triparanol inhibits the activity of the enzyme: (A) ∆24 Reductase (B) Oxidosqualene-lanosterol cyclase (C) Isomerase (D) Squalene epoxidase ENZYMES 155
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