Description : Ferritin is (A) Coenzyme (B) One of the component of photophosphorylation (C) It is the stored form of iron (D) Non-protein moiety
Last Answer : Answer : C
Description : The following co-enzyme is needed for the oxidative decarboxylation of ketoacids: (A) NADP+ (B) TPP (C) Folate coenzyme (D) Biotin coenzyme
Last Answer : B
Description : The amino acid containing hydroxyl group: (A) Alanine (B) Isoleucine (C) Arginine (D) Threonine
Last Answer : Answer : D
Description : Transfer of the carbamoyl moiety of carbamoyl phosphate to ornithine is catalysed by a liver mitochondrial enzyme: (A) Carbamoyl phosphate synthetase (B) Ornithine transcarbamoylase (C) N-acetyl glutamate synthetase (D) N-acetyl glutamate hydrolase
Last Answer : Answer : B
Description : A functional group designated—COOH is known as a/an a. Carboxyl. b. Carbonyl. c. Amino. d. Hydroxyl.
Last Answer : a. Carboxyl.
Description : A molecule of CO2 is captured by biotin when it acts as coenzyme for carboxylation reaction. The carboxyl group is covalently attached to (A) A nitrogen (N1) of the biotin molecule (B) Sulphur of thiophene ring (C) α-Amino group of lysine (D) α-Amino group of protein
Last Answer : Answer : A
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 : 2-Butanol is optically active because it contains : (a) an asymmetric carbon (b) a plane of symmetry (c) a hydroxyl group (d) a centre of symmetry
Last Answer : (a) an asymmetric carbon
Description : Increased serum alanine during fasting is due to (A) Breakdown of muscle proteins (B) Decreased utilization of non essential amino acids (C) Leakage of aminoacids to plasma (D) Impaired renal function
Description : Reducing ability of carbohydrates is due to (A) Carboxyl group (B) Hydroxyl group (C) Enediol formation (D) Ring structure
Last Answer : A
Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid
Last Answer : C
Description : Carbon 6-of purine skeleton comes from (A) Atmospheric CO2 (B) 1 carbon carried by folate (C) Betoine (D) Methionine
Description : The first reaction unique to purine nucleotide synthesis is catalysed by (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Phosphoribosyl glycinamide synthetase (D) Formyl transferase
Description : GMP is an allosteric inhibitor of all the following except (A) PRPP synthetase (B) PRPP glutamyl amido synthetase (C) IMP dehydrogenase (D) Adenylosuccinate synthetase
Description : An allosteric inhibitor of PRPP glutamyl amido transferase is (A) AMP (B) ADP (C) GMP (D) All of these
Description : All of the following enzymes are unique to purine nucleotide synthesis except (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Adenylosuccinate synthetase (D) IMP dehydrogenase
Description : In the pathway of de novo synthesis of purine nucleotides, all the following are allosteric enzymes except (A) PRPP glutamyl amido transferase (B) Adenylosuccinate synthetase (C) IMP dehydrogenase (D) Adenylosuccinase
Description : The coenzyme involved in dehydrogenation of 3-hydroxy acyl-CoA is (A) FAD (B) FMN (C) NAD (D) NADP
Description : The coenzyme not involved in the formation of acetyl-CoA from pyruvate is (A) TPP (B) Biotin (C) NAD (D) FAD
Description : Which ot the following vitamin is involved in coenzyme function in transaminations? (A) Nicotinamide (B) Pyridoxine (C) Thiamine (D) Riboflavin
Description : Pantothenic acid is a constituent of coenzyme involved in (A) Acetylation (B) Decarboxylation (C) Dehydrogenation (D) Oxidation
Description : The following vitamin is involved in coenzyme function in transaminations: (A) Nicotinamide (B) Pyridoxine (C) Thiamine (D) Riboflavin
Description : Pantothenic acid is a constituent of the coenzyme involved in (A) Decarboxylation (B) Dehydrogenation (C) Acetylation (D) Oxidation
Description : Vitamin B1 coenzyme (TPP) is involved in (A) Oxidative decarboxylation (B) Hydroxylation (C) Transamination (D) Carboxylation
Description : The genetic code operates via (A) The protein moiety of DNA (B) The base sequences of DNA (C) The nucleotide sequence of mRNA (D) The base sequence of tRNA
Description : The genetic code operates through (A) The protein moiety of DNA (B) Cistrom of DNA (C) Nucleotide sequence of m RNA (D) The anticodons of tRNA
Description : The sugar moiety present in DNA is (A) Deoxyribose (B) Ribose (C) Lyxose (D) Ribulose
Description : The sugar moiety present in RNA is (A) Ribulose (B) Arabinose (C) Ribose (D) Deoxyribose
Description : Carbohydrate moiety in cerebrosides is (A) Glucose (B) Sucrose (C) Galactose (D) Maltose
Description : The protein moiety of lipoprotein is known as (A) Apoprotein (B) Pre-protein (C) Post-protein (D) Pseudoprotein
Description : Transfer of reducing equivalents from succinate dehydrogenase to coenzyme Q is specifically inhibited by (A) Carboxin (B) Oligomycin (C) Piericidin A (D) Rotenone
Description : Which of the following coenzyme takes part in hydrogen transfer reactions? (A) Tetrahydrofolate (B) Coenzyme A (C) Coenzyme Q (D) Biotin
Description : The enzyme amino acyl tRNA synthetase is involved in (A) Dissociation of discharged tRNA from 80S ribosome (B) Charging of tRNA with specific amino acids (C) Termination of protein synthesis (D) Nucleophilic attack on esterified carboxyl group of peptidyl tRNA
Description : Which of the following statement(s) is/are true concerning metabolic derangements in sepsis and the systemic inflammatory response syndrome which may follow progressive shock? a. Alterations in glucose ... The serum aromatic amino acids fall rapidly as they are actively used in oxidative metabolism
Last Answer : Answer: b, c A broad spectrum of metabolic abnormalities become apparent in sepsis and the systemic inflammatory response syndrome following shock. Disruption of the normal cycles of carbohydrate, ... acetyl coenzyme A. This results in reduced serum level of leucine, isoleucine and valine
Description : In contrast to a patient undergoing an elective operation, which of the following statement(s) is/are true concerning a patient who has suffered a multiple trauma? a. Basal metabolic rates are ... is similar to their composition in skeletal muscle d. Fat and protein stores are rapidly depleted
Last Answer : Answer: b, d The degree of hypermetabolism is generally related to the severity of injury. Patients with long-bone fractures have a 15-25% increase in metabolic rate, whereas metabolic ... in injured subjects, if unfed, severely injured patients rapidly deplete their fat and protein stores
Description : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electroph
Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. ... (I) is: A. B. C. D.
Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This ... (2)` D. `.^(*)C Cl_(3)`
Last Answer : Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. ... ` D. aq. `NaOH + C Cl_(4)`
Description : Phenol is an ortho-para director because the hydroxyl group : (a) donates electrons that increase electron density at ortho and para positions favoring nucleophilic attack. (b) donates ... para positions and attracts electrons away from meta positions favoring electrophilic attack on the ring.
Last Answer : donates electrons that increase electron density at ortho and para positions favoring electrophilic attack.
Description : The greater acidity of carboxylic acids compared to alcohols arises primarily from : (a) the electron-donating effect of the hydroxyl group (b) the electron-withdrawing effect of the carboxyl ... of α-hydrogens of carboxylic acids (d) the resonance stability associated with the carboxylate ion
Last Answer : the resonance stability associated with the carboxylate ion
Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar Structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid
Last Answer : (C) The steroid nucleus form forms a rigid, planar Structure
Description : Name the compound formed when an hydroxyl group is attached to a phenyl group.
Last Answer : ANSWER: PHENOL
Description : Which of the following is a hydroxyl fatty acid? (A) Oleic Acid (B) Ricinoleic acid (C) Caproic acid (D) Arachidonic acid
Description : High iodine value of a lipid indicates (A) Polymerization (B) Carboxyl groups (C) Hydroxyl groups (D) Unsaturation
Description : Hormones (A) Act as coenzyme (B) Act as enzyme (C) Influence synthesis of enzymes (D) Belong to B-complex group
Description : Part of enzyme which combines with nonprotein part to form functional enzyme is (A) Apoenzyme (B) Coenzyme (C) Prosthetic group (D) None of these
Description : Combination of apoenzyme and coenzyme produces (A) Prosthetic group (B) Holoenzyme (C) Enzyme substrate complex (D) Enzyme product complex
Description : An examp le of group transferr ing coenzyme is (A) NAD+ (B) NADP+ (C) FAD (D) CoA
Description : Which of the following is not a component of coenzyme A? (A) Pantothenic acid (B) Adenylic acid (C) Acetic acid (D) Sulfhydryl group
Description : Sulphydryl group of coenzyme a is contributed by (A) β-Alanine (B) β-Aminoisobutyric acid (C) Methionine (D) Thioethanolamine