Description : Co-factor (prosthetic group) is a part of holoenzyme. It is (a) loosely attached organic part (b) loosely attached inorganic part (c) accessory non-protein substance attached firmly (d) none of these.
Last Answer : (c) accessory non-protein substance attached firmly
Description : Combination of apoenzyme and coenzyme produces (A) Prosthetic group (B) Holoenzyme (C) Enzyme substrate complex (D) Enzyme product complex
Last Answer : Answer : B
Description : Difference between cofactor and prosthetic group. -Biology
Last Answer : answer:
Description : An organic substance bound to an enzyme and essential for the activity of enzyme is called (A) Holoenzyme (B) Apoenzyme (C) Coenzyme (D) Isoenzyme
Last Answer : Answer : C
Description : An inorganic ion required for the activity of an enzyme is known as (A) Activator (B) Cofactor (C) Coenzyme (D) None of these
Description : The half-life of a protein depends upon its (A) Signal sequence (B) N-terminus amino acid (C) C-terminus amino acid (D) Prosthetic group
Description : $ In conjugated proteins, the protein molecule is joined to a non proteins group called prosthetic group. ! Nucleproteins are a type of conjugated pro
Last Answer : $ In conjugated proteins, the protein molecule is joined to a non proteins group called prosthetic group. ! ... wrong D. If both As and R are wrong.
Description : Protein portion of an enzyme when it is combined with organic molecule is termed as A- apoenzyme B- co-enzyme C- holoenzyme D- co-factors
Last Answer : apoenzyme
Description : A growing peptide in a ribosome can not be shifted to the adjacent ribosome because (A) It is firmly attached (B) It will get the amino acid cleaved (C) The gap between the ribosomes is too big for a shift (D) The adjacent ribosomes have different composition
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 : Consider the following statements. (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. (B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the ... ) (A) is true but (B) is false. (d) Both (A) and (B) are false
Last Answer : (d) Both (A) and (B) are false.
Description : Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) ... holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus
Last Answer : Answer : D
Description : Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these
Description : Protein part of enzyme is know as – (1) Isoenzyme (2) Holoenzyme (3) Apoenzyme (4) All the above
Last Answer : (3) Apoenzyme Explanation: Enzymes are defined as biological catalysts. Chemically all enzymes are globular proteins. Each enzyme catalyses only one chemical reaction. Protein part of enzyme is known as Apoenzyme.
Description : Protein part of enzyme is know as (1) Isoenzyme (2) Holoenzyme (3) Apoenzyme (4) All the above
Last Answer : Apoenzyme
Description : In presence of the following cofactor, pyruvate carboxylase converts pyruvate to oxaloacetate: (A) ATP, Protein and CO2 (B) CO2 and ATP (C) CO2 (D) Protein
Last Answer : A
Description : What cellular interactions are the cells of the stratum basale firmly attached to the plasma membrane?
Last Answer : Need answer
Description : The vitreous: a. is firmly attached to the pars plana b. has a high concentration of hyaluronic acid c. contains calcium in asteroid hyalosis d. all above
Last Answer : all above
Description : Is gasoline an organic or inorganic Substance?
Description : Glycoproteins are marked for destruction by removal of their (A) Oligosaccharide prosthetic group (B) Sialic acid residues (C) Mannose residues (D) N-terminal amino acids
Description : Zn is present as prosthetic group in this enzyme: (A) Carbonic anhydrase (B) Carboxy peptidase (C) Lactate dehydrogenase (D) All of these
Description : Iron-pophyrin is present as prosthetic group in (A) Cytochromes (B) Catalases (C) Peroxidase (D) None of these
Description : The prosthetic group of aerobic dehydrogenases is (A) NAD (B) NADP (C) FAD (D) Pantothenic acid
Description : Of Which warburg’s yellow enzyme contains as a prosthetic group? (A) Thiamine pyrophosphate (B) Biotin (C) NAD+ (D) Riboflavin-5-phosphate
Description : Prosthetic group in cone cell phototreceptors is (A) Iodine (B) Opsin (C) 11-cis-retinal (D) all-trans-retinal
Description : The reaction of Kreb’s cycle which does not require cofactor of vitamin B group is (A) Citrate isocitrate (B) α -Ketoglutarate succinate (C) Malate oxaloacetate (D) Succinate fumarate
Last Answer : Answer : A
Description : Which one of the following is NOT part of an ATP MOLECULE? a. Phosphate group b. Cofactor c. Ribose d. Adenine
Last Answer : b. Cofactor
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
Description : Across a membrane phospholipids act as carrier of (A) Organic compounds (B) Inorganic ions (C) Nucleic acids (D) Food materials
Description : As thrombin generation proceeds, the body has natural anticoagulant systems opposing further thrombus formation. Natural anticoagulants include: a. Tissue plasminogen activator (TPA) b. Antithrombin III c. Activated protein C d. Heparin cofactor II
Last Answer : Answer: b, c, d Just as thrombin generation is the key to coagulation, antithrombin III is the most central anticoagulant proteins. This glycoprotein binds to thrombin, preventing its removal of ... in the body. Therefore, TPA is part of the fibrinolytic system rather than a natural anticoagulant
Description : ________ is naturally occurring inorganic substance found deep under the surface of the earth. a) ore b)mineral c)metal d)non-metal
Last Answer : b)mineral
Description : In regard to the enamel surface: A. It is a perfect substance for bonding B. It does not conform to the bonding requirements C. It is the most inorganic, rough part D. It is free from contamination and roughness E. None of the above
Last Answer : B. It does not conform to the bonding requirements
Description : Coenzyme is (A) Often a vitamin (B) Always an inorganic compound (C) Always a protein (D) Often a metal ENZYMES 173
Description : Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases
Last Answer : Ans. ((b))
Description : Enzyme without Prosthetic group
Last Answer : Ans. Apo enzyme
Description : Apoenzyme + Prosthetic group
Last Answer : Ans. Holoenzyme
Description : Which of the following have carbohydrate as prosthetic group? (a) Glycoprotein (b) Chromoprotein (c) Lipoprotein (d) Nucleoprotein
Last Answer : (a) Glycoprotein
Description : Do scientists using the word "theory" loosely extend confusion on its exact, scientific meaning within the non-scientific public?
Last Answer : If I'm understanding your question correctly, yes, I think bandying about the colloquial use of theory clouds the scientific meaning of the word. And I find that in debates about evolution ... are misusing the word theory gets tedious. The scientists should probably use hypothesis instead.
Description : RNA polymerase holoenzyme binds to lac operon at the following site: (A) i gene (B) z gene (C) Operator locus (D) Promoter region
Description : DNA polymerase III holoenzyme possesses (A) Polymerase activity (B) 3’→5’ Exonuclease activity (C) 5’→3’ Exonuclease and polymerase activities (D) 3’→5’ Exonuclease and polymerase activities
Description : Negative supercoils are introduced in DNA by (A) Helicase (B) DNA ligase (C) DNA gyrase (D) DNA polymerase III holoenzyme
Description : Ribonucleotides of RNA primer are replaced by deoxyribonucleotides by the enzyme: (A) DNA polymerase I (B) DNA polymerase II (C) DNA polymerase III holoenzyme (D) All of these
Description : Deoxyribonucleotides are added to RNA primer by (A) DNA polymerase I (B) DNA polymerase II (C) DNA polymerase III holoenzyme (D) All of these
Description : A Holoenzyme is (A) Functional unit (B) Apo enzyme (C) Coenzyme (D) All of these
Description : Coenzymes are (A) Heat stable, dialyzable, non protein organic molecules (B) Soluble, colloidal, protein molecules (C) Structural analogue of enzymes (D) Different forms of enzymes
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 : Molybdenum is a cofactor for (A) Xanthine oxidase (B) Aldehyde oxidase (C) Sulphite oxidase (D) All of these
Description : Zinc is a cofactor for (A) Acid phosphatase (B) Alkaline phosphatase (C) Amylase (D) Lipase
Description : Cobalt may act as cofactor for the enzyme: (A) Glycl-glycine dipeptidase (B) Elastase (C) Polynucleotidases (D) Phosphatase
Description : A cofactor required for the activity of the enzyme ALA dehydratase is (A) Cu (B) Mn (C) Mg (D) Fe