Description : I-cell disease results from absence of the following from lysosomal enzymes: (A) Signal sequence (B) Mannose-6-phosphate (C) Sialic acid (D) A serine residue
Last Answer : Answer : D
Description : Carbamoyl phosphate synthetase structure is marked by change in the presence of (A) N-Acetyl glutamate (B) N-Acetyl Aspartate (C) Neuraminic acid (D) Oxalate
Last Answer : Answer : A
Description : How N-acetyl neuraminic acid (sialic acid) is synthesised?
Last Answer : N-acetyl mannosamine-6-phosphate + phospho enol pyruvate.
Description : In the intestine the rate of absorption is highest for (A) Glucose and galactose (B) Fructose and mannose (C) Fructose and pentose (D) Mannose and pentose
Description : Selwanof’s test is positive in (A) Glucose (B) Fructose (C) Galactose (D) Mannose
Last Answer : Answer : B
Description : Starch and glycogen are polymers of (A) Fructose (B) Mannose (C) α−D-Glucose (D) Galactose
Last Answer : C
Description : Which of the following is an epimeric pair? (A) Glucose and fructose (B) Glucose and galactose (C) Galactose and mannose (D) Lactose and maltose
Last Answer : B
Description : The constituent unit of inulin is (A) Glucose (B) Fructose (C) Mannose (D) Galactose
Description : Sucrose consists of (A) Glucose + glucose (B) Glucose + fructose (C) Glucose + galactose (D) Glucose + mannose
Description : All of the following monosaccharides give the same osazone except (a) Galactose (b) Glucose (c) Fructose (d) Mannose
Last Answer : Galactose
Description : A substrate for the enzyme aldolase is (A) galactose-6-phosphate (B) isocitric acid (C) Glucose-1-phosphate (D) Fructose 1, 6 diphosphate
Description : Repeating units of hyaluronic acid are (A) N-acetyl glucosamine and D-glucuronic acid (B) N-acetyl galactosamine and D-glucuronic acid (C) N-acetyl glucosamine and galactose (D) N-acetyl galactosamine and L- iduronic acid
Last Answer : A
Description : The following is actively absorbed in the intestine: (A) Fructose (B) Mannose (C) Galactose (D) None of these
Description : Galactose 1-phosphate is converted to uridine diphosphate galactose, the reaction is catalysed by the enzyme: (A) Glactokinase (B) Galactose 1-phosphate uridyl transferase (C) Uridine diphospho galactose 4-epimerase (D) UDP glucose pyrophosphorylase
Description : Fatty acids can not be converted into carbohydrates in the body, as the following reaction is not possible: (A) Conversion of glucose-6-phosphate into glucose (B) Fructose 1, 6 diphosphate to ... phosphate (C) Transformation of acetyl CoA to pyruvate (D) Formation of acetyl CoA from fatty acids
Last Answer : Answer : C
Description : Fatty acids cannot be converted into carbohydrates in the body as the following reaction is not possible. (A) Conversion of glucose-6-phosphate into glucose (B) Fructose 1,6-bisphosphate to fructose- ... (C) Transformation of acetyl CoA to pyruvate (D) Formation of acetyl CoA from fatty acids
Description : Which of the metabolites is common to respiration- mediated breakdown of fats, carbohydrates and proteins? (a) Pyruvic acid (b) Acetyl CoA (c) Glucose - 6 - phosphate (d) Fructose 1, 6 - bisphosphate
Last Answer : (b) Acetyl CoA
Description : Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins? (a) Glucose-6-phosphate (b) Fructose 1, 6-bisphosphate (c) Pyruvic acid (d) Acetyl CoA
Last Answer : d) Acetyl CoA
Description : Pompe ’s d isease is caused due to deficiency of (A) Lysosomal α-1→4 and 1→6-glucosidase (B) Glucose-6-phosphatase (C) Glycogen synthase (D) Phosphofructokinase
Description : In I-cell disease, lysosomal enzymes (A) Are not synthesised (B) Are inactive (C) Lack signal sequence (D) Cannot reach lysosomes
Description : End product of glycolysis is (a) acetyl CoA (b) pyruvic acid (c) glucose 1-phosphate (d) fructose 1-phosphate.
Last Answer : (b) pyruvic acid
Description : Glycoproteins are marked for destruction by removal of their (A) Oligosaccharide prosthetic group (B) Sialic acid residues (C) Mannose residues (D) N-terminal amino acids
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 : Hemolytic anemia is caused by the deficiency of certain enzymes of the pentose phosphate pathway, the principal enzyme involved is (A) Glucose-6-phosphate dehydrogenase (B) Aldolase (C) Fructose 1, 6-bisphosphatase (D) Phosphohexose isomerase
Description : The enzymes involved in Phosphorylation of glucose to glucose 6- phosphate are (A) Hexokinase (B) Glucokinase (C) Phosphofructokinase (D) Both (A) and (B)
Last Answer : D
Description : Barfoed’s solution is not reduced by (A) Glucose (B) Mannose (C) Sucrose (D) Ribose
Description : The metabolite which sustains urea cycle is (A) Ornithine (B) Citrulline (C) Carbamoyl phosphate (D) n-acetyl glutamate
Description : Transfer of the carbamoyl moiety of carbamoyl phosphate to ornithine is catalysed by a liver mitochondrial enzyme: (A) Carbamoyl phosphate synthetase (B) Ornithine transcarbamoylase (C) N-acetyl glutamate synthetase (D) N-acetyl glutamate hydrolase
Description : Galactose is phosphorylated by galactokinase to form (A) Galactose-6-phosphate (B) Galactose-1, 6 diphosphate (C) Galactose-1-phosphate (D) All of these
Description : Viropexis takes place in the phagocytic vacuoles and is due to the action of Enzymes A- DNA gyrase B- lysosomal protease C- lysosomal lipase D- all of these
Last Answer : lysosomal protease
Description : The most important mechanism of antiinflammatory action of glucocorticoids is: A. Inhibition of lysosomal enzymes B. Restriction of recruitment of inflammatory cells at the site of inflammation C. Antagonism of action of interleukins D. Suppression of complement function
Last Answer : B. Restriction of recruitment of inflammatory cells at the site of inflammation
Description : Uridine diphosphate glucose (UDPG) is (A) Required for metabolism of galactose (B) Required for synthesis of glucuronic acid (C) A substrate for glycogen synthetase (D) All of the above
Description : In synthesis of Triglyceride from α-Glycero phosphate and acetyl CoA, the first intermediate formed is (A) β-diacyl glycerol (B) Acyl carnitine (C) Monoacyl glycerol(D) Phosphatidic acid
Description : Tarui disease is characterized by the deficiency of the enzyme: (A) Liver phosphorylase (B) Muscle phosphorylase (C) Muscle and erythrocyte phosphofructokinase (D) Lysosomal acid maltase
Description : The best known cause of galactosemia is the deficiency of (A) Galactose 1-phosphate and uridyl transferase (B) Phosphoglucomutase (C) Galactokinase (D) Lactose synthase
Description : A mitochondrial marker enzyme is (A) Aldolase (B) Amylase (C) Succinic dehydrogenase (D) Pyruvate dehydrogenase ENZYMES 175
Description : D-Mannose is present in some plant products like (A) Resins (B) Pectins (C) Mucilage (D) Gums
Description : Cytosolic and mitochondrial carbamoyl phosphate synthetase have the following similarity: (A) Both use ammonia as a substance (B) Both provide carbamoyl phosphate for urea synthesis (C) Both require N-acetylglutamate as an activator (D) Both are allosteric enzymes
Description : Which of the following metabolite integrates glucose and fatty acid metabolism? (A) Acetyl CoA (B) Pyruvate (C) Citrate (D) Lactate
Description : Glycogen while being acted upon by active phosphorylase is converted first to (A) Glucose (B) Glucose 1-phosphate and Glycogen with 1 carbon less (C) Glucose-6-phosphate and Glycogen with 1 carbon less (D) 6-Phosphogluconic acid
Description : Sodium is involved in the active uptake of (A) D-Glucose (B) D-Galactose (C) L-Amino acids (D) All of these
Description : Galactose is readily converted to glucose in (A) Liver (B) Intestine (C) Kidney (D) Adipose tissue
Description : Galactose is synthesized from glucose in (A) Mammary gland (B) Intestine (C) Kidney (D) Adipose tissue
Description : The sugar absorbed by fac i l itated diffusion and requiring Na independent transporter is (A) Glucose (B) Fructose (C) Galactose (D) Ribose
Description : Spermatozoa in seminal fluid utilises the following sugar for metabolism: (A) Galactose (B) Glucose (C) Sucrose (D) Fructose
Description : Carbohydrate moiety in cerebrosides is (A) Glucose (B) Sucrose (C) Galactose (D) Maltose
Description : Impaired galactose tolerance test suggests (A) Defect in glucose utilisation (B) Liver cell injury (C) Renal defect (D) Muscle injury
Description : Epimers of glucose is (A) Fructose (B) Galactose (C) Ribose (D) Deoxyribose
Description : Whcih of the following features are common to monosaccharides? (A) Contain asymmetric centres (B) Are of 2 types – aldoses and ketoses (C) Tend to exist as ring structures in solution (D) Include glucose, galactose and raffinose
Description : Which of the following reaction gives lactose? (A) UDP galactose and glucose (B) UDP glucose and galactose (C) Glucose and Galactose (D) Glucose, Galactose and UTP