Description : In conversion of lactic acid to glucose, three reactions of glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase
Last Answer : Answer : B
Description : In conversion of Lactic acid to Glucose, three reactions of Glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate Carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase
Last Answer : C
Description : During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP? (a) Glycolysis (b) Krebs’ cycle (c) Conversion of pyruvic acid to acetyl CoA (d) Electron transport chain
Last Answer : (d) Electron transport chain
Description : The number of ATP molecules required to convert 2 molecules of lactate into glucose in mammalian liver is (A) 2 (B) 4 (C) 5 (D) 6
Last Answer : Answer : D
Description : How many ATP molecules are required to convert two molecules of pyruvate into glucose?
Last Answer : Six.
Description : Lack of qxygen in muscle often leads to cramps among Athletes . This results due to : (a) conversion of Pyruvate to Ethanol (b) conversion of Pyruvate to Glucose (c) conversion of Glucose to Pyruvate (d) conversion of Pyruvate to Lactic acid
Last Answer : (b) conversion of Pyruvate to Glucose
Description : In conversion of glucose to glucose-6- phsophate, the coenzyme is (A) Mg++ (B) ATP (C) Both (A) and (B) (D) None of these
Description : The ratio that most closely approximates the number of net molecules of ATP formed per mole of glucose utilized under aerobic conditions to the net number formed under anaerobic conditions is (A) 4:1 (B) 13:1 (C) 18:1 (D) 24:1
Last Answer : Answer : C
Description : The ultimate respiratory substrate, yielding maximum number of ATP molecules, is (a) glycogen (b) ketogenic amino acid (c) glucose (d) amylose.
Last Answer : (c) glucose
Description : During an early step of respiration, glucose is converted into two identical molecules of: a) CO2 b) ATP c) pyruvic acid(pron: pie-ROO-vik) d) chlorophyll
Last Answer : ANSWER: C -- PYRUVIC ACID
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
Last Answer : D
Description : Tissues form lactic acid from glucose. This phenomenon is termed as (A) Aerobic glycolysis (B) Oxidation (C) Oxidative phosphorylation (D) Anaerobic glycolysis
Description : The number of ATP molecules generated for each turn of the citric acid cycle is (A) 8 (B) 12 (C) 24 (D) 38
Description : What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue? (1) ATP (2) Lactic acid (3) Ethyl alcohol (4) Carbon dioxide
Last Answer : (2) Lactic acid Explanation: Anaerobic reactions break down glucose into pyruvic acid, which then reacts to produce lactic acid. As muscle metabolism shifts from aerobic to anaerobic ATP production, ... begins to accumulate in muscles and to appear in the bloodstream. This leads to muscle fatigue.
Description : What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue ? (1) ATP (2) Lactic acid (3) Ethyl alcohol (4) Carbon dioxide
Last Answer : Lactic acid
Description : The number of molecules of ATP produced by the total oxidation of acetyl CoA in TCA cycle is (A) 6 (B) 8 (C) 10 (D) 12
Description : The net number of ATP formed per mole of glucose in anaerobic glycolysis is (A) 1 (B) 2 (C) 6 (D) 8
Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose
Description : The enzyme acyl-CoA synthase catalyses the conversion of a fatty acid of an active fatty acid in the presence of (A) AMP (B) ADP (C) ATP (D) GTP
Description : how many ATP molecules could maximally be generated from one molecule of glucose, if -Biology
Last Answer : answer:
Description : A molecule of glucose on complete oxidation yields howmany ATP molecules in case of aerobic respiration? -Do You Know?
Description : A molecule of glucose on complete oxidation yields howmany ATP molecules in case of aerobic respiration?
Last Answer : 36
Description : Out of 36 ATP molecules produced per glucose molecule during respiration (a) 2 are produced outside glycolysis and 34 during respiratory chain (b) 2 are produced outside mitochondria and 34 inside ... (c) 2 during glycolysis and 34 during Krebs' cycle (d) all are formed inside mitochondria
Last Answer : (b) 2 are produced outside mitochondria and 34 inside mitochondria
Description : When one glucose molecule is completely oxidised, it changes (a) 36 ADP molecules into 36 ATP molecules (b) 38 ADP molecules into 38 ATP molecules (c) 30 ADP molecules into 30 ATP molecules (d) 32 ADP molecules into 32 ATP molecules.
Last Answer : (b) 38 ADP molecules into 38 ATP molecules
Description : Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in (a) respiratory chain (b) Krebs’ cycle (c) oxidative decarboxylation (d) EMP.
Last Answer : (a) respiratory chain
Description : How many ATP molecules are produced by aerobic oxidation of one molecule of glucose? (a) 2 (b) 4 (c) 38 (d) 34
Last Answer : c) 38
Description : How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal? (a) 1 (b) 2 (c) 30 (d) 57
Last Answer : d) 57
Description : The first step for initiation of photosynthesis will be (a) photolysis of water (b) excitement of chlorophyll molecules due to absorption of light (c) ATP formation (d) glucose formation.
Last Answer : (b) excitement of chlorophyll molecules due to absorption of light
Description : 1 molecule of palmitic acid on total oxidation to CO2 will yield molecules of ATP (as high energy bonds): (A) 129 (B) 154 (C) 83 (D) 25
Last Answer : Answer : A
Description : Out of 24 mols of ATP formed in TCA cycle, 2 molecules of ATP can be formed at “substrate level” by which of the following reaction ? (A) Citric acid→ Isocitric acid (B) Isocitrate→ Oxaloacetate (C) Succinic acid→ Fumarate (D) Succinylcat→ Succinic acid
Description : When palmitoleic acid (16 C, 1 double bond) is completely oxidised, what is the net generation of ATP molecules?
Last Answer : 127.
Description : In the erythrocytes, the net production of ATP molecules by the Rapport-Leubering pathway is (A) 0 (B) 2 (C) 4 (D) 8
Description : UDP-Glucose is converted to UDPGlucuronic acid by (A) ATP (B) GTP (C) NADP+ (D) NAD+
Last Answer : B
Description : The first organic compound synthesized in the laboratory was - (1) Urea (2) Uric acid (3) Lactic acid (4) Glucose
Last Answer : (1) Urea Explanation: In 1828, German chemist Friedrish Wohler synthesized first organic compound, urea in the laboratory by heating ammonium cyanate (an inorganic compound).
Description : True statements about the aqueous humour: a. has a higher lactic acid concentration than in the plasma b. the glucose levels is lower than that of the plasma levels c. the ascorbic acid ... same concentration of protein as in the plasma e. the rate of formation is about 2.5ul/minute
Last Answer : has a higher lactic acid concentration than in the plasma
Description : When you do strenuous exercise, oxygen is used up rapidly. What substance is formed. a) pyruvic acid(pron: pie-ROO-vik) b) lactic acid c) glucose d) alcohol
Last Answer : ANSWER: B -- LACTIC ACID
Description : Into which of the following acids is glucose broken down in the first stage of carbohydrate metabolism? Is it: a) pyruvic acid (pie-rue-vick acid) b) lactic acid c) hydrochloric acid d) citric acid
Last Answer : ANSWER: A -- PYRUVIC ACID
Description : The first organic compound synthesised in the laboratory was (1) Urea (2) Uric acid (3) Lactic acid (4) Glucose
Last Answer : Urea
Description : If glucose-1-phosphate formed by glycogenoloysis in muscles is oxidized to CO2 and H2O, the energy yield will be (A) 2 ATP equivalents (B) 3 ATP equivalents (C) 4 ATP equivalents (D) 8 ATP equivalents
Description : Complete oxidation of one molecule of glucose into CO2 and H2O yields (A) 8 ATP equivalents (B) 15 ATP equivalents (C) 30 ATP equivalents (D) 38 ATP equivalents
Description : In anaerobic glycolysis, energy yield from each molecule of glucose is (A) 2 ATP equivalents (B) 8 ATP equivalents (C) 30 ATP equivalents(D) 38 ATP equivalents
Description : Hexokinase (Glucose + ATP → Glucose-6– P + ADP) belongs to the category: (A) Transferases (B) Lysases (C) Oxidoreductases (D) Isomerases
Description : In the reaction below, Nu TP stands for NuTP + glucose → Glucose 6–Phosphate + NuDP. (A) ATP (B) CTP (C) GTP (D) UTP
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 : Which one of the following would be expected in pyruvate kinase deficiency? (A) Increased levels of lactate in the R.B.C (B) Hemolytic anemia (C) Decreased ratio of ADP to ATP in R.B.C (D) Increased phosphorylation of Glucose to Glucose-6-phosphate
Description : The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products. PathwayA Pathway B 6 Pathway C 11 2 Glucose 1 5 10 12 7 4 8 3 Arrows numbered 4, 8 and 12 can all be (a) H2O (b) FAD+ or FADH2 (c) NADH (d) ATP.
Last Answer : (d) ATP.
Description : The enzyme phosphoenolpyruvate carboxykinase catalyses the conversion of oxaloacetate to phosphoenolpyruvate requires (A) ATP (B) ADP (C) AMP (D) GTP
Description : Conversion of tyrosine to dihydroxyphenylalanine is catalysed by tyrosine hydroxylase which requires (A) NAD (B) FAD (C) ATP (D) Tetrahydrobiopterin
Description : The enzyme glucose-6-phosphatase which catalyses the conversion of glucose 6-phosphate to glucose is not found in (A) Liver (B) Muscle (C) Intestine (D) Kidney