Description : The carbon atoms of pyrimidine nucleus are provided by (A) Glycine and aspartate (B) CO2 and aspartate (C) CO2 and glutamate (D) CO2 and glutamine
Last Answer : Answer : B
Description : In the purine nucleus, carbon 6 is contributed by (A) Glycine (B) CO2 (C) Aspartate (D) Glutamine
Description : Nitrogen at position 3 of pyrimidine nucleus comes from (A) Glutamine (B) Glutamate (C) Glycine (D) Aspartate
Last Answer : Answer : A
Description : Nitrogen at position 1 of pyrimidine nucleus comes from (A) Glutamine (B) Glutamate (C) Glycine (D) Aspartate
Last Answer : Answer : D
Description : The two nitrogen of the pyrimidine ring are contributed by (A) Ammonia and glycine (B) Asparate and carbamoyl phosphate (C) Glutamine and ammonia (D) Aspartate and ammonia
Description : Pyrimidine biosynthesis begins with the formation from glutamine, ATP and CO2, of (A) Carbamoyl aspartate (B) Orotate (C) Carbamoyl phosphate (D) Dihydroorotate
Last Answer : Answer : C
Description : Which of the following contributes nitrogen atoms to both purine and pyrimidine rings? (A) Aspartate (B) Carbamoyl phosphate (C) CO2 (D) Glutamine
Description : The nitrogen atoms of pyrimidine nucleus are provided by (A) Glutamate (B) Glutamate and aspartate (C) Glutamine (D) Glutamine and aspartate
Description : In purine biosynthesis carbon atoms at 4 and 5 position and N at 7 position are contributed by (A) Glycine (B) Glutamine (C) Alanine (D) Threonine
Description : In purine nucleus nitrogen atom at 1 position is derived from (A) Aspartate (B) Glutamate (C) Glycine (D) Alanine
Description : The four nitrogen atoms of purines are derived from (A) Urea and NH3 (B) NH3, Glycine and Glutamate (C) NH3, Asparate and Glutamate (D) Aspartate, Glutamine and Glycine
Description : The nitrogen atoms for de novo synthesis of purine nucleotides are provided by (A) Aspartate and glutamate (B) Aspartate and glycine (C) Aspartate, glutamine and glycine (D) Aspartate, glutamate and glycine
Description : The 2 nitrogen atoms in urea are contributed by (A) Ammonia and glutamate (B) Glutamine and glutamate (C) Ammonia and aspartate (D) Ammonia and alanine
Description : Along with CO2, NH3 and ATP, the amino acid that is needed in urea cycle is (A) Alanine (B) Isoleucine (C) Aspartate (D) Glycine
Description : Aspartate contributes the following carbon atoms of the pyrimidine nucelus: (A) C2 and C4 (B) C5 and C6 (C) C2, C4 and C6 (D) C4, C5 and C6
Description : Cytosolic carbamoyl phosphate synthetase is activated by (A) Glutamine (B) PRPP (C) ATP (D) Aspartate
Description : In brain, the major metabolism for removal of ammonia is the formation of (A) Glutamate (B) Aspartate (C) Asparagine (D) Glutamine
Description : The amino acid that undergoes oxidative deamination at significant rate is (A) Alanine (B) Aspartate (C) Glutamate (D) Glutamine
Description : Which one of the following contributes nitrogen atoms to both purine and pyrimidine rings? (A) Aspartate (B) Carbanoyl phosphate (C) Carbondioxide (D) Tetrahydrofolate
Description : De novo synthesis of pyrimidine nucleotides is regulated by (A) Carbamoyl phosphate synthetase (B) Aspartate transcarbamoylase (C) Both (A) and (B) (D) None of these
Description : All the enzymes required for de novo synthesis of pyrimidine nucleotides are cytosolic except (A) Carbamoyl phosphate synthetase (B) Aspartate transcarbamoylase (C) Dihydro-orotase (D) Dihydro-orotate dehydrogenase
Description : An enzyme common to de novo synthesis of pyrimidine nucleotides and urea is (A) Urease (B) Carbamoyl phosphate synthetase (C) Aspartate transcarbamoylase (D) Argininosuccinase
Description : The enzyme aspartate transcarbamoylase of pyrimidine biosynthesis is inhibited by (A) ATP (B) ADP (C) AMP (D) CTP
Description : An enzyme of pyrimidine nucleotide biosynthesis sensitive to allosteric regulation is (A) Aspartate transcarbamoylase (B) Dihydroorotase (C) Dihydroorotate dehydrogenase (D) Orotidylic acid decarboxylase
Description : Carnitine is synthesized from (A) Lysine and methionine (B) Glycine and arginine (C) Aspartate and glutamate (D) Proline and hydroxyproline
Description : The primary structure of fibroin, the principal protein of silk worm fibres consists almost entirely of (A) Glycine (B) Aspartate (C) Keratin (D) Tryptophan
Description : The major source of NH3 produced by the kidney is (A) Leucine (B) Glycine (C) Alanine (D) Glutamine
Description : The amino acid which is not optically active is (A) Alanine (B) Glycine (C) Glutamine (D) Lysine
Description : Pyrimidine and purine nucleoside biosynthesis share a common precursor: (A) PRPP (B) Glycine (C) Fumarate (D) Alanine
Description : Small amount of urinary oxalates is contributed by the amino acid: (A) Glycine (B) Tyrosine (C) Alanine (D) Serine
Description : For de novo synthesis of purine nucleotides, glycine provides (A) One nitrogen atom (B) One nitrogen and one carbon atom (C) Two carbon atoms (D) One nitrogen and two carbon atoms
Description : All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine
Description : All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine
Description : Sulphur containing amino acid (A)Lysine (B) Methionine (C)Glutamine (D) Glycine
Last Answer : (B) Methionine
Description : In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein
Description : Which one of the following statements is wrong? (a) Uracil is a pyrimidine. (b) Glycine is a sulphur containing amino acid. (c) Sucrose is a disaccharide. (d) Cellulose is a polysaccharide.
Last Answer : (b) Glycine is a sulphur containing amino acid.
Description : All the standard amino acids except the following have one chiral ‘c’ atom: (A) Threonine, Isoleucine (B) Isoleucine, Alanine (C) Threonine, Alanine (D) Alanine, Glutamine
Description : Which amino acid is present at 6th position of β-chain of Hbs instead of glutamate in HbA? (A) Cysteine (B) Valine (C) Aspartate (D) Glutamate
Description : Glycine contributes to the following C and N of purine nucleus: (A) C1, C2 and N7 (B) C8, C8 and N9 (C) C4, C5 and N7 (D) C4, C5 and N9
Description : Carbon skeleton of the following amino acid can serve as a substance for gluconeogenesis (A) Cysteine (B) Aspartate (C) Glutamate (D) All of these
Description : What has deforestation contributed to the increase in CO2?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : When an Atom of carbon has 6 protons and 7 neutrons in its nucleus if the atom is neutral how many electrons does it have?
Last Answer : Need answer
Description : How did henry moseley determine that contributed to understanding the atom?
Last Answer : Henry Moseley is a Physicist. He used x-rays and discovered the atomic number of each element, that led to more accurate organization of the Periodic Table. He arranged the elements in the periodic table by the number of protons of the elements not on the basis of atomic weights of the elements.
Description : Aspartate amino transferase uses the following for transamination: (A) Glutamic acid and pyruvic acid (B) Glutamic acid and oxaloacetic acid (C) Aspartic acid and pyruvic acid (D) aspartic acid and keto adipic acid
Description : Aspartate transcarbamoylase is inhibited by (A) CTP (B) PRPP (C) ATP (D) TMP
Description : For de novo synthesis of purine nucleotides, aspartate provides (A) Nitrogen 1 (B) Nitrogen 3 (C) Nitrogen 7 (D) Nitrogen 9
Description : Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate
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
Description : In small intestine trypsin hydrolyzes peptide linkages containing (A) Arginine (B) Histidine (C) Serine (D) Aspartate
Description : Two nitrogen atoms of Urea in the urea cycle come from (A) NH3 (B) One from NH3 and one from aspartate (C) One from NH3 and one from glutamate (D) One from NH3 and one from alanine