Description : The precursor of CoA is (A) Riboflavin (B) Pyridoxamine (C) Thiamin (D) Pantothenate
Last Answer : D) Pantothenate
Description : Which of the following vitamins is the precurssor of CoA? (A) Riboflavin (B) Pantothenate (C) Thiamine (D) Cobamide
Last Answer : Answer : B
Description : In fatty acids synthase of both bacteria and mammals, ACP (acyl carrier protein) contain the vitamin: (A) Thiamin (B) Pyridoxine (C) Riboflavin (D) Pantothenic acid
Last Answer : Answer : D
Description : The transketolase enzyme in the pentose phosphate pathway requires the B vitamin. (A) Pantothenic acid (B) Thiamin (C) Riboflavin (D) Nicotinic acid
Description : The three vitamins which are specially required for proper nerve functions are (A) Thiamine, Niacin and Riboflavin (B) Thiamin, Folic acid, Choline (C) Thiamine, Riboflavin, Pantothenic acid (D) Thiamine, Pyridoxin, Vitamin B12
Description : Pellagra preventing factor is (A) Thiamin (B) Riboflavin (C) Niacin (D) Pyridoxine
Last Answer : Answer : C
Description : Consumption of raw eggs can cause deficiency of (A) Biotin (B) Pantothenic acid (C) Riboflavin (D) Thiamin
Last Answer : Answer : A
Description : The Vitamin which does not contain a ring in the structure is (A) Pantothenic acid (B) Vitamin D (C) Riboflavin (D) Thiamin
Description : Magenta tongue is found in the deficiency of the vitamin (A) Riboflavin (B) Thiamin (C) Nicotinic acid (D) Pyridoxine
Description : In new born infants phototherapy may cause hyperbilirubinemia with deficiency of (A) Thiamin (B) Riboflavin (C) Ascorbic acid (D) Pantothenic acid VITAMINS 115
Description : Concentration of pyruvic acid and lactic acid in blood is increased due to deficiency of the vitamin (A) Thiamin (B) Riboflavin (C) Niacin (D) Pantothenic acid
Description : Neonatal tyrosinemia improves on administration of (A) Thiamin (B) Riboflavin (C) Pyridoxine (D) Ascorbic acid
Description : An important reaction for the synthesis of amino acid from carbohydrate intermediates is transamination which requires the cofactor: (A) Thiamin (B) Riboflavin (C) Niacin (D) Pyridoxal phosphat
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 : Which of the following intermediates of metabolism can be both a precursor and a product of glucose? (A) Lactate (B) Pyruvate (C) Alanine (D) Acetyl-CoA
Description : Riboflavin is a coenzyme in the reaction catalysed by the enzyme (A) Acyl CoA synthetase (B) Acyl CoA dehydrogenase (C) β-Hydroxy acyl CoA (D) Enoyl CoA dehydrogenase
Description : Which of the following is known as Vitamin B1? (1) Retinol (2) Thiamin (3) Riboflavin (4) Ascorbic Acid
Last Answer : (2) Thiamin Explanation: Thiamine also called vitamin B 1, named as the "thio-vitamine" ("sulfurcontaining vitamin") is a watersoluble vitamin of the B complex. First named aneurin for ... the generic descriptor name vitamin B 1. Its phosphate derivatives are involved in many cellular processes.
Last Answer : (A) Riboflavin
Last Answer : (A) Thiamin
Description : ____ functions in carbohydrate metabolism. a. Zinc c. Riboflavin b. Thiamin d. Vitamin B
Last Answer : b. Thiamin
Description : Which of the following is known as Vitamin B1 ? (1) Retinol (2) Thiamin (3) Riboflavin (4) Ascorbic Acid
Last Answer : Thiamin
Description : Vitamin B6 includes (A) Pyridoxal (B) Pyridoxamine (C) Pyridoxine (D) All of these
Description : Both folic acid and methyl cobalamin (vitamin B12) are required in (A) Deamination of serine (B) Deamination of threonine (C) Conversion of pyridoxal phosphate to pyridoxamine phosphate (D) Methylation of homocystein to methionine
Description : The mechanism of synthesis of DNA and RNA are similar to 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 (D) They require a primer
Description : Insoinic acid is the biological precursor of (A) Cytosine and Uric acid (B) Adenylve acid and Glucine floc acid (C) Orotic acid and Uridylic acid (D) Adenosine acid Thymidine
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 : All of the following statements about tRNA are true except (A) It is synthesized as a large precursor (B) It is processed in the nucelolus (C) It has no codons or anticodons (D) Genes for rRNA are present in single copies
Description : Heterogeneous nuclear RNA is the precursor of (A) mRNA (B) rRNA (C) tRNA (D) None of these
Description : Pyrimidine and purine nucleoside biosynthesis share a common precursor: (A) PRPP (B) Glycine (C) Fumarate (D) Alanine
Description : Infant i le convu ls ions due to lesser formation of gamma amino butyric acid from glutamic acid is seen in the deficiency of (A) Glutamate-dehydrogenase (B) Pyridoxine (C) Folic acid (D) Thiamin
Description : All the following statements about βendorphin are true except µ : (A) It is a polypeptide (B) Its precursor is pro-opio-melanocortin (C) Its receptors are represent in brain (D) Its action is blocked by morphine
Description : Immediate precursor of epinephrine is (A) Metanephrine (B) Norepinephrine (C) Dopa (D) Dopamine
Description : All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland ... ) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY
Description : Precursor of ACTH is (A) Cholesterol (B) Pregnenolone (C) Corticotropin (D) Pro-opiomelanocortin
Description : The precursor of testosterone is (A) Aldosterone (B) Methyl testosterone (C) Estrone (D) Pregnenolone
Description : A component of the respiratory chain in mitochondria is (A) Coenzyme Q (B) Coenzyme A (C) Acetyl coenzyme (D) Coenzyme containing thiamin
Description : Zymogen is a (A) Vitamin (B) Enzyme precursor (C) Modulator (D) Hormone
Description : A coenzyme present in phosphorylase is (A) NAD (B) Pyridoxal phosphate (C) Thiamin pyrophosphate (D) Coenzyme A
Description : Coenzyme A contains a vitamin which is (A) Thiamin (B) Ascorbic acid (C) Pantothenic acid (D) Niacinamide
Description : Which of the following coenzyme takes part in oxidation-reduction reactions? (A) Pyridoxal phosphate (B) Lipoic acid (C) Thiamin diphosphate (D) None of these
Description : The common precursor in the biosynthesis of triacylglycerol and phospholipids is (A) 1, 2-Diacylglycerol phosphate (B) 1-Acylglycerol 3-phosphate (C) Glycerol 3-phosphate (D) Dihydroxyacetone phosphate
Description : Dietary deficiency of thiamin inhibits the activity of the enzyme: (A) Pyruvate kinase (B) Pyruvate dehydrogenase (C) Phosphofructokinase (D) Enolase
Description : Glucose absorption is promoted by (A) Vitamin A (B) Thiamin (C) Vitamin C (D) Vitamin K
Description : Cholesterol is a precursor in the biogenesis of (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) None of these
Description : Precursor of Vitamin A is (A) α-Carotene (B) β-Carotene (C) γ-Carotene (D) All of these VITAMINS 121
Description : A vitamin which can be synthesized by human beings is (A) Thiamin (B) Niacin (C) Folic acid (D) Cyanocobalamin
Description : Anaemia can occur due to the deficiency of all the following except (A) Thiamin (B) Pyridoxine (C) Folic acid (D) Cyanocobalamin
Description : The vitamin having the highest daily requirement among the following is (A) Thiamin (B) Ribovflavin (C) Pyridoxine (D) Ascorbic acid
Description : Anti-egg white injury factor is (A) Pyridoxine (B) Biton (C) Thiamin (D) Liponic acid