Description : Hexokinase (Glucose + ATP → Glucose-6– P + ADP) belongs to the category: (A) Transferases (B) Lysases (C) Oxidoreductases (D) Isomerases
Last Answer : Answer : C
Description : What is the difference between aldose and ketose? -Biology
Last Answer : answer:
Description : The reagent that can be used to differentiate an aldose and a ketose is : (a) Bromine water (b) Fehling's solution (c) Tollens' reagent (d) None of these
Last Answer : Bromine water
Description : Conversion of fructose to sorbitol is catalysed by the enzyme: (A) Sorbitol dehydrogenase (B) Aldose reductase (C) Fructokinase (D) Hexokinase
Last Answer : Answer : A
Description : The heptose ketose sugar formed as a result of chemical reaction in HMP shunt: (A) Sedoheptulose (B) Galactoheptose (C) Glucoheptose (D) Mannoheptose
Last Answer : A
Description : The four membered aldose sugar phosphate formed in HMP shunt pathway is (A) Xylulose P (B) Erythrulose P (C) Erythrose P (D) Ribulose P
Last Answer : C
Description : The aldose sugar is (A) Glycerose (B) Ribulose (C) Erythrulose (D) Dihydoxyacetone
Last Answer : (A) Glycerose
Description : Glucose cannot be classified as (a) a hexose (b) an oligosaccharide (c) an aldose (d) a monosaccharide
Last Answer : an oligosaccharide
Description : Pyruvate dehydrogenase is a/an (A) Isomerase (B) Lyase (C) Ligase (D) Oxido reductase
Last Answer : Answer : D
Description : What enzyme catalyzes phosphodiester bond? -Biology
Description : What is the chemical equation of the formation of bicarbonate from carbon dioxide and water? What is the enzyme that catalyzes this reaction?
Last Answer : The chemical equation of the chemical equilibrium of the formation of bicarbonate having as reagents carbon dioxide and water is as follows: CO2 + H20 --> H2CO3 --> H+ + HCO3- The reaction is catalyzed by the enzyme carbonic anhydrase present in red blood cells.
Description : The enzyme which catalyzes the unwinding of DNA helix during replication is: (1) Primase (2) Topoisomerase (3) Helicase (4) DNA polymerase
Last Answer : (3) Helicase Explanation: A type of helicase enzyme called DNA helicase catalyzes the unwinding of the DNA helix at the time of replication. It uses the energy released through hydrolysis of ATP ( ... The enzyme is needed to separate the two strands of DNA also during transcription and DNA repair.
Description : In the metabolic pathway, ABCDE, discuss what effect molecule E would likely have on regulating the enzyme that catalyzes the reaction of A to B?
Last Answer : E is the product. If there is enough of molecule E to complete a chemical process, for example, the molecules (reactants) ABCDE will not be needed, and therefore an excess of E means less of ABCDE produced.
Description : Many living organisms exhibit the unique property of producing visible light. The compound that is oxidized with subsequent light emission is usually referred to as luciferin. What is the enzyme which catalyzes the reaction known as?
Last Answer : ANSWER: Luciferase
Description : The enzyme which catalyzes the unwinding of DNA helix during replication is: (1) Primase (2) Topoisomerase (3) Helicase (4) DNApolymerase
Last Answer : C option is the answer
Description : Molybdenum is a constituent of (A) Hydroxylases (B) Oxidases (C) Transaminases (D) Transferases
Last Answer : Answer : B
Description : Enzymes which catalyse binding of two substrates by covalent bonds are known as (A) Lyases (B) Hydrolases (C) Ligases (D) Oxidoreductases
Description : Name a ketose.
Last Answer : Fructose.
Description : What is the function of hydrolases?
Last Answer : Cleave bond after adding water.
Description : What is the function of transferases?
Last Answer : Transfer of groups other than hydrogen.
Description : The oxidation state of mo in its oxido-complex - complex species `[Mo_(2)O_(4)[C_(2)H_(4))_(2)(H_(2)O)]^(2-)` is
Last Answer : The oxidation state of mo in its oxido-complex - complex species `[Mo_(2)O_(4)[C_(2)H_(4))_(2)(H_(2)O)]^(2-)` is A. `+2 ` B. `+3` C. `+4` D. `+5`
Description : The essential trace element which catalyzes the formation of Hb in the body is (A) Mn (B) Se (C) Mg (D) Cu
Description : This catalyzes formation of CoA derivatives from fatty acid, CoA and ATP: (A) Acyl CoA dehydrogenase (B) Enoyl hydrase (C) β-OH acyl CoA dehydrogenase (D) Thio kinase
Description : The mechanism of antibacterial action of tetracycline involves (a) Binding to a component of the 50S ribosomal subunit (b) Inhibition of translocase activity (c) Blockade of binding of ... (d) Selective inhibition of ribosomal peptidyl transferases (e) Inhibition of DNA-dependent RNA polymerase
Last Answer : Ans: C
Description : Hydrolytic enzymes which act on low pH are called as (a) proteases (b) α-amylases (c) hydrolases (d) peroxidases.
Last Answer : (a) proteases
Description : Name the organelle that contains high levels of hydrolases and is responsible for digestion of proteins, sugars, nucleic acids and lipids.
Last Answer : Lysosomes
Description : Peptidases are classified under which class of enzyme?
Last Answer : Hydrolases.
Description : Conversion of deoxyuridine monophosphate to thymidine monophosphate is catalysed by the enzyme: (A) Ribonucleotide reductase (B) Thymidylate synthetase (C) CTP synthetase (D) Orotidylic acid decarboxylase
Description : A cofactor in the conversion of dihydroorotate to orotic acid, catalysed by the enzyme dihydroorotate dehydrogenase is (A) FAD (B) FMN (C) NAD (D) NADP
Description : Conversion of testosterone to estradiol requires the enzyme: (A) Aromatase (B) Dehydrogenase (C) Lyase (D) Isomerase HORMONE METABOLISM 215
Description : The enzyme catalyzing conversion of androstenedione to testosterone is a (A) Oxygenase (B) Dehydrogenase (C) Isomerase (D) Decarboxylase
Description : Conversion of uroporphyrinogen III to coprophyrinogen III is catalysed by the enzyme.: (A) Uroporphyrinogen decarboxylase (B) Coproporphyrinogen oxidase (C) Protoporphyrinogen oxidase (D) Ferrochelatase
Description : The enzyme phosphoenolpyruvate carboxykinase catalyses the conversion of oxaloacetate to phosphoenolpyruvate requires (A) ATP (B) ADP (C) AMP (D) GTP
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
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 : The enzyme dopamine β-oxidase which catalyses conversion of dopamine to norepinephrine requires (A) Vitamin A (B) Vitamin C (C) Vitamin E (D) Vitamin B12
Description : DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the
Last Answer : DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the ... Antistrand C. Template strand D. Coding strand
Description : Which of the following molecule catalyzes the transpeptidation reaction? A.RNA polymerase B.Peptidyl transferase C.DNA ligase D.DNA polymerase
Last Answer : B.Peptidyl transferase
Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA Polymerase B- Peptidlytransferase C- DNA ligase D- DNA polymerase
Last Answer : Peptidlytransferase
Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA polymerase B- .Peptidyltransferase C- DNA ligase D- .DNA polymerase
Last Answer : .Peptidyltransferase
Description : Glucagon activates the enzyme adenylcyclase which causes the increase of blood sugar level. Hence this hormone is called (A) Hypoglycemic factor (B) Hyper glycemic factor (C) Antidiauritic factor (D) Thyrotropin-releasing factor
Description : The co-enzyme containing an automatic hetero ring in the structure is (A) Biotin (B) TPP (C) Sugar Phosphate (D) Co-enzyme
Description : Which enzyme irreversibly channels glucose to energy production, rather than retaining glucose for blood sugar regulation?
Last Answer : Pyruvate dehydrogenase is an irreversible reaction.
Description : the conversion of maltose to glucose is possible by the enzyme :
Last Answer : the conversion of maltose to glucose is possible by the enzyme : A. Invertase B. Zymase C. Maltase D. Diastase
Description : An enzyme which brings about the conversion of starch into maltose is known as
Last Answer : An enzyme which brings about the conversion of starch into maltose is known as A. Diastase B. Zymase C. Maltase D. Invertase
Description : The enzyme enterokinase helps in conversion of (a) protein into polypeptides (b) trypsinogen into trypsin (c) caseinogen into casein (d) pepsinogen into pepsin.
Last Answer : (b) trypsinogen into trypsin
Description : If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.
Last Answer : (a) fixation of nitrogen in legumes