Description : The condensation of 2 molecules of δ-aminolevulinate dehydratase contains (A) ALA synthase (B) ALA hydratase (C) Uroporphyrinogen synthase I (D) Uroporphyrinogen synthase III
Last Answer : Answer : B
Description : The enzyme δ-aminolevulinate dehydratase contains (A) Zinc (B) Manganese (C) Magnesium (D) Calcium
Last Answer : Answer : A
Description : Hereditary coproporphyria is caused due to deficiency of (A) Protoporphyrinogen oxidase (B) ALA synthase (C) ALA dehydratase (D) Coproporphyrinogen oxidase
Last Answer : Answer : D
Description : A cofactor required for the activity of the enzyme ALA dehydratase is (A) Cu (B) Mn (C) Mg (D) Fe
Description : Growth regulating herbicides that act simi lar to that of endogenous auxin (IAA) a). Benzoic acid b). pyridine carboxylic acid c). quinoline carboxylic acid d). All
Last Answer : d). All
Description : The characteristic urinary finding in porphyria cutanea tarda is (A) Increased quantity of porphobilinogen (B) Increased quantity of red cell protoporphyrin (C) Increased quantity of uroporphyrin (D) Increased quantity of δ-ALA
Last Answer : Answer : C
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 : Amino acid containing a thio-ether bond is.
Last Answer : Methionine.
Description : Acetoacetyl-CoA condenses with one more molecule of acetyl-CoA to form (A) Mevalonate (B) Acetoacetate (C) β-Hydroxybutyrate (D) 3-Hydroxy 3-methyl-glutaryl-CoA
Description : In the pathway leading to biosynthesis of acetoacetate from acetyl-CoA in liver, the immediate precursor of aceotacetate is (A) Acetoacetyl-CoA (B) 3-Hydroxybutyryl-CoA (C) 3-Hydroxy-3-methyl-glutaryl-CoA (D) 3-Hydroxybutyrate
Description : RNA does not contain (A) Uracil (B) Adenine (C) Hydroxy methyl cytosine (D) Phosphate
Description : Neogenesis of methyl group is (A) The availability of methyl group form δ adenosyl methionine (B) The availability of methyl group from betaine (C) Interaction between N5 N10 methylene tetra hydrofolate with a NAD+ dependent reductase (D) Availability of methyl group from methyl B12
Description : Most of the ammonia released from L-αamino acids reflects the coupled action of transaminase and (A) L-glutamate dehydrogenase (B) L-amino acid oxidase (C) Histidase (D) Serine dehydratase
Description : Ethyl alcohol containing 9.5% methyl alcohol and 0.5 % pyridine is called
Last Answer : Ethyl alcohol containing 9.5% methyl alcohol and 0.5 % pyridine is called A. Spirit B. Denaturated spirit C. Rectified spirit D. Absolute alcohol
Description : Which one of the following can be oxidized to the corresponding carbonyl compound - (1) O-Nitrophenol (2) Phenol (3) 2-methyl-2-hydroxy propane (4) 2-hydroxy propane
Last Answer : (4) 2-hydroxy propane
Description : Chlorophyll a molecule at its carbon atom 3 of the pyrrole ring II has one of the following (a) carboxylic group (b) magnesium (c) aldehyde group (d) methyl group
Last Answer : d) methyl group.
Description : Nylon-66 is a polyamide of (A) Hexamethylene diamine and adipic acid (B) Adipic acid and methyl amine (C) Vinyl chloride and formaldehyde (D) None of these
Last Answer : (A) Hexamethylene diamine and adipic acid
Description : Niacin or nicotinic acid is a monocarboxylic acid derivative of (A) Pyridine (B) Pyrimidine (C) Flavin (D) Adenine
Description : Primase activity is present in (A) DNA polymerase II (B) DNA polymerase α (C) DNA polymerase β (D) DNA polymerase δ
Description : In the insulin receptor, tyrosine kinase domain is present in (A) α-Subunits (B) β-Subunits (C) γ-Subunits (D) δ-Subunits
Description : The nucleotide binding site of G-proteins is present on their (A) α-Subunit (B) β-Subunit α- and β- (C) γ-Subunit (D) δ-Subunit
Description : Type δ H chain is present in (A) Ig G (B) Ig A (C) Ig M (D) Ig D
Description : The protein, which is in fact a multifunctional enzyme complex in higher organism is (A) Acetyl transacylase (B) Malonyl transacylase (C) 3-Hydroxy acyl-ACP dehyratase (D) Fatty acid synthase
Description : Folic acid or folate consists of the (A) Base pteridine, p-amino benzoic acid and asparate (B) Base purine, p-amino benzoic acid and glutamate (C) Base pteridine, p-amino benzoic acid and glutamate (D) Base purine, p-hydroxy benzoic acid and glutamate
Description : Which of the following is a hydroxy fatty acid? (A) Oleic acid (B) Ricinoleic acid (C) Caproic acid (D) Stearic acid
Description : An example of a hydroxy fatty acid is (A) Ricinoleic acid (B) Crotonic acid (C) Butyric acid (D) Oleic acid
Description : The amino acid containing hydroxy group: (A) Glycine (B) Isoleucine (C) Arginine (D) Thereonine
Description : The first amino acid incorporated in a polypeptide in a ribosome of a human is (A) N formyl methionine (B) Methionine (C) Phenyl alanine (D) Hydroxy lysine
Description : Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid
Last Answer : (A) 2-Amino 5-guanidovaleric acid
Description : During synthesis of porphyrins, synthesis of δ-amino levulinic acid occurs in (A) Mitochondria (B) Cytosol (C) Both in mitochondria and cytosol (D) Ribosomes
Description : In the biosynthesis of the iron protoporphyrin, the product of the condensation between succinyl-CoA and glycine is (A) α-Amino β-ketoadipic acid (B) δ-Aminolevulinate (C) Hydroxymethylbilane (D) Uroporphyrinogen I
Description : If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called as (A) Alpha (B) Beta (C) Gamma (D) Epsilon
Description : The α-ketoacid is decarboxylated by H2O2 forming a carboxylic acid with one carbon atom less in the absence of the enzyme: (A) Catalase (B) Decarboxylase (C) Deaminase (D) Phosphatase
Description : From two amino acids peptide bond formation involves removal of one molecule of (A) Water (B) Ammonia (C) Carbondioxide (D) Carboxylic acid
Description : If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called (A) Alpha (B) Beta (C) Gamma (D) Delta
Description : Which of the following correctly reflects relative stabilities of carbocations? (a) 3° allylic > 2° > 1° benzylic (b) methyl > 2° benzylic > 3° (c) 3° benzylic > vinyl > 1° (d) 2° allylic > 2° > vinyl
Last Answer : (d) 2° allylic > 2° > viny
Description : Mature erythrocytes do not contain (A) Glycolytic enzymes(B) HMP shunt enzymes (C) Pyridine nucleotide(D) ATP
Last Answer : C
Description : Which of the following reagents will react with furan to form 2-furansulfonic acid? (a) SO3 in pyridine at 100°C (b) Dilute H2SO4 at 200°C (c) SO2 at 100°C (d) Dilute H2SO4 at 100°C
Last Answer : SO3 in pyridine at 100°C
Description : Pyridine undergoes electrophilic substitution with fuming H2SO4 at 350°C to give (a) 2-Pyridinesulfonic acid (b) 4-Pyridinesulfonic acid (c) 3-Pyridinesulfonic acid (d) None of these
Last Answer : 3-Pyridinesulfonic acid
Description : A compound gives a positive Tollens' test but negative Ninhydrin test. It is (a) a protein (b) an amino acid (c) a monosaccharide (d) pyridine
Last Answer : a monosaccharide
Last Answer : (A) Pyridine
Description : Which of the following is NOT a nitrogenous waste compound excreted by animals? a) urea b) ammonia c) uric acid d) pyridine
Last Answer : ANSWER: D -- PYRIDINE
Description : The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is: (1) Amino phenyl alanine (2) Hydroxy phenyl alanine (3) Phenyl alanine (4) Dihydroxy phenyl alanine
Last Answer : (4) Dihydroxy phenyl alanine Explanation: The foot of the common mussel (Mytilus edulis) produces a sticky glue due to a unique compound called mussel adhesive protein, which contains a high ... be used as a tooth coating to prevent dental plaque, which is caused by bacterial infection.
Last Answer : Dihydroxy phenyl alanine
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 : Catecholamine hormones are (A) 3, 4-Dihydroxy derivatives of phenylethylamine (B) p-Hydroxy derivatives of phenylacetate (C) p-Hydroxy derivatives of phenylpyruvate (D) p-Hydroxy derivatives of phenyllactate
Description : The synthesis of 3-hydroxy-3-methylglutaryl-CoA can occur (A) Only in mitochondria of all mammalian tissues (B) Only in the cytosol of all mammalian tissue (C) In both cytosol and mitochondria (D) In lysosomes
Description : The coenzyme involved in dehydrogenation of 3-hydroxy acyl-CoA is (A) FAD (B) FMN (C) NAD (D) NADP
Description : The formation of ∆2-trans-enoyl-CoA from acyl-CoA requires the enzyme: (A) Acyl-CoA synthetase (B) Acyl-CoA dehydrogenase (C) 3-Hydroxy acyl-CoA dehydrogenase (D) Thiolase