Description : The pathway of glycogen biosynthesis involves a special nucleotide of glucose. In the reaction below, NuDP stands for NuDP Glucose + glycogenn → NuDP + glycogenn+1 (A) ADP (B) GDP (C) UDP (D) CDP
Last Answer : Answer : C
Description : One of the following statement is correct: (A) Glycogen synthase ‘a’ is the phosphorylated (B) cAMP converts glycogen synthase b to ‘a’ (C) Insulin converts glycogen synthase b to a (D) UDP glucose molecules interact and grow into a Glycogen tree
Last Answer : C
Description : In the reaction below, Nu TP stands for NuTP + glucose → Glucose 6–Phosphate + NuDP. (A) ATP (B) CTP (C) GTP (D) UTP
Last Answer : Answer : A
Description : Given that the standard free energy change (∆G°) for the hydrolysis of ATP is -7.3 K cal/mol and that for the hydrolysis of Glucose 6-phosphate is -3.3 Kcal/mol, the ∆G° for the phosphorylation of glucose is Glucose + ATP → ... -10.6 Kcal/mol (B) -7.3 Kcal/mol (C) -4.0 Kcal/mol (D) +4.0 Kcal/mol
Description : Glycogen phosphorylase liberates the following from glycogen (A) Glucose (B) Glucose-6-phosphate (C) Glucose-1-phosphate (D) Maltose
Description : Allosteric activator of glycogen synthase is (A) Glucose (B) Glucose-6-Phosphate (C) UTP (D) Glucose-1-phosphate
Last Answer : Answer : B
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 : 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 : Glucose-1-phosphate liberated from glycogen cannot be converted into free glucose in (A) Liver (B) Kidneys (C) Muscles (D) Brain
Description : Glycogen is converted to glucose-1- phosphate by (A) UDPG transferase (B) Branching enzyme (C) Phosphorylase (D) Phosphatase
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
Last Answer : D
Description : In the glycogen synthesis, which is the active glucose derivative?
Last Answer : UDP-glucose.
Description : Pentose phosphate pathway is of significance because it generates (A) NADPH for reductive synthesis (B) Regenerates glucose 6-phosphate (C) Generates fructose 6-phosphate (D) Forms glyceraldehyde 3-phosphate
Description : UDP Glucuronic acid is required for the biosynthesis of (A) Chondroitin sulphates (B) Glycogen (C) Lactose (D) Starch
Last Answer : A
Description : 6-Mercapto purine inhibits the conversion of (A) IMP→ XMP (B) Ribose 5 phosphate → PRPP (C) PRPP → 5-phospho →β -D-ribosylamine (D) Glycinamide ribosyl 5-phosphate → formylglycinamide ribosyl-5-phosphate
Description : Glycerol-3-phosphate for the synthesis of triglycerides in adipose tissue is derived from (A) Phosphatidic acid (B) Diacylglycerol (C) Glycerol (D) Glucose
Last Answer : Answer : D
Description : Adipose tissue which is a store house for triacyl glycerol synthesis the same using (A) The glycerol released by hydrolysis of triacyl glycerol (B) The glycerol-3-phosphate obtained in the metabolism of glucose (C) 2-phosphoglycerate (D) 3-phosphoglycerate
Description : The effects of glucocorticoid hormones include: a. increase hepatic glycogen synthesis b. decrease glucose uptake by the adipose tissue c. decrease hepatic gluconeogesis d. increase protein synthesis in the skeletal muscles
Last Answer : . increase hepatic glycogen synthesis
Description : Action of Insulin does not include the following: A. Facilitation of glucose transport into cells B. Facilitation of glycogen synthesis by liver C. Facilitation of neoglucogenesis by liver D. Inhibition of lipolysis in adipose tissue
Last Answer : . Facilitation of neoglucogenesis by liver
Description : A substance that is not an intermediate in the formation of D-glucuronic acid from glucose is (A) Glucoss-1-p (B) 6-Phosphogluconate (C) Glucose-6-p (D) UDP-Glucose
Last Answer : B
Description : Hexokinase (Glucose + ATP → Glucose-6– P + ADP) belongs to the category: (A) Transferases (B) Lysases (C) Oxidoreductases (D) Isomerases
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 : The branching enzyme acts on the glycogen when the glycogen chain has been lengthened to between glucose units: (A) 1 and 6 (B) 2 and 7 (C) 3 and 9 (D) 6 and 11
Description : Glycogen structure includes a branch in between–glucose units: (A) 6–12 (B) 8–14 (C) 6–10 (D) 12–18
Description : What is the major form of caloric storage in human body? (A) ATP (B) Glycogen (C) Creatine phosphate (D) triacylglycerol
Description : Pyridoxal phosphate is a coenzyme for (A) Glycogen synthetase (B) Phosphorylase (C) Both (A) and (B) (D) None of these
Description : UDP glucose is converted to UDP glucurronate, a reaction catalysed by UDP glucose dehydrogenase requires (A) NAD+ (B) FAD (C) NADP (D) FMN
Description : UDP-Glucose is converted to UDPGlucuronic acid by (A) ATP (B) GTP (C) NADP+ (D) NAD+
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
Description : For glycogenesis, Glucose should be converted to (A) Glucuronic acid (B) Pyruvic acid (C) UDP glucose (D) Sorbitol
Description : The mechanism of synthesis of DNA and RNA are similar in all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is 5’ → 3’ (D) They require a primer
Description : Direction of RNA synthesis is (A) 5′ → 3’ (B) 3′ → 5’ (C) Both (A) and (B) (D) None of these
Description : Direction of DNA synthesis is (A) 5’ → 3’ (B) 3’ → 5’ (C) Both (A) and (B) (D) None of these
Description : The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇌ Y, in which the (A) Equilibrium constant is infinite (B) Fractional conversion of 'A' at equilibrium is unity (C) Concentration of 'A' at equilibrium is zero (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : In the biosynthesis of cholesterol, the step which controls the rate and locus of metabolic regulation is (A) Geranyl pyrophosphate farnesyl pyrophosphate (B) Squalene → lanosterol (C) HMG CoA → mevalonate (D) Lanosterol → 1, 4-desmethyl lanosterol
Description : Insulin decreases the synthesis of (A) Hexokinase (B) Glucokinase (C) PEP carboxykinase (D) Glycogen synthetase
Description : Insulin increases (A) Protein synthesis (B) Fatty acid synthesis (C) Glycogen synthesis (D) All of these
Description : Acyl carrier protein is involved in the synthesis of (A) protein (B) glycogen (C) fatty acid outside the mitochondria (D) fatty acid in the mitochondria
Description : Glycogenin is (A) Uncoupler of oxidative phosphorylation (B) Polymer of glycogen molecules (C) Protein primer for glycogen synthesis (D) Intermediate in glycogen breakdown
Description : An essential agent for converting glucose to glycogen in liver is (A) Latic acid (B) GTP (C) UTP (D) Pyruvic acid
Description : Action of glycogen synthase is inhibited by (A) Insulin (B) Glucose (C) Mg2+ (D) Cyclic AMP
Description : The process of breakdown of glycogen to glucose in the liver and pyruvate and lacate in the muscle is known as (A) Glyogenesis (B) Glycogenolysis (C) Gluconeogenesis (D) Cellular degradation
Description : Renal glycosuria occurs due to (A) Increased filtration of glucose in glomeruli (B) Increased secretion of glucose by renal tubular cells (C) Decreased reabsorption of glucose by renal tubular cells (D) Increased conversion of glycogen into glucose in tubular cells
Description : The carbohydrate reserved in human body is (A) Starch (B) Glucose (C) Glycogen (D) Inulin
Description : Starch and glycogen are polymers of (A) Fructose (B) Mannose (C) α−D-Glucose (D) Galactose
Description : An essential for converting Glucose to Glycogen in Liver is (A) Lactic acid (B) GTP (C) CTP (D) UTP CARBOHYDRATES AND CARBOHYDRATE METABOLISM 19
Description : Glycogen synthetase activity is depressed by (A) Glucose (B) Insulin (C) Cyclic AMP (D) Fructokinase
Description : Branching occurs in glycogen approximately after every (A) Five glucose units (B) Ten glucose units (C) Fifteen glucose units (D) Twenty glucose units
Description : A carbohydrate, commonly known as dextrose is (A) Dextrin (B) D-Fructose (C) D-Glucose (D) Glycogen
Description : Oxidation of which substance in the body yields the most calories (A) Glucose (B) Glycogen (C) Protein (D) Lipids