The uncatalyzed reaction rate for the conversion of substrate X to product Y is one year. The enzyme-catalyzedrate is one millisecond. Describe the features of theenzyme that are probably responsible for this ratedifference.

Q: Glycogen phosphorylase is an example of an enzyme that is regulated both by allosteric control and…

A: The enzyme's noncovalent contact can also be used to promote or inhibit the activity of the enzyme.…

Q: Why is the reaction catalyzed by citrate synthase considered a condensation reaction?

A: The citric acid cycle is the oxidation metabolic pathway that leads to the production of electrons…

Q: To what class of enzymes does hexokinase belong? Describe in general the reaction it catalyzes.

A: An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which…

Q: What is the simplest explanation in the notion that phosphofructokinase is a regulated enzyme?

A: Phosphofructokinase regulated by ATP, an ADp derivative called AMP, and citrate, as well as some…

Q: Give the reactions of the urea cycle and their corresponding enzyme catalysts.  These must be…

A: Urea Cycle: It is a set of biochemical reactions which are involved in excreting the excess nitrogen…

Q: Enzymes act by reducing the activation energy of areaction. Describe several ways in which this…

A: Enzymes are biomolecules which catalyzes the reactions so that reactions take less time to complete…

Q: Explain the chemical change that occurs in converting kynurenine (a product of tryptophan…

A: Kynurenine is a metabolite of the amino acid tryptophan and used in the production of niacin.…

Q: In the estimation of glucose with benedict's reagent, what is resposnible for the white precipitate…

A:

Q: Explain how the position in the active site and function of the oxyanion hole of chymotrypsin…

A: Enzymes are highly specialized proteins that have extraordinary catalytic power, greater than that…

Q: Hexokinase catalyzes the first step of glycolysis, in which glucose is phosphorylated to form…

A: Glycolysis is a process in which glucose is converted into pyruvate.

Q: Hexokinase is an example of a general class of enzymeknown as the _____________________.

A: Hexokinase is an enzyme that phosphorylates hexoses forming hexose phosphate.

Q: To understand the entire glycolytic pathway better, kindly complete the table Structural activator…

A:

Q: Mercuric ion and methanol are inhibitors of alcohol dehydrogenase. Explain.

A: Alcohol (ADH) dehydrogenase is an enzyme that helps in the interconversion of alcohol into ketones…

Q: Given the following reaction, identify the class and subclass of the enzyme involved. CH2OH C=O…

A: Enzymes catalyse the reaction either by making or breaking the bond. They might form double bonds or…

Q: In Bacillus subtilis, threonine is metabolized by the following sequence of reactions: (a)…

A:

Q: Why is the Krebs cycle considered part of aerobic metabolism, even though O2 does not appear in any…

A: Asked : Reason for kreb's cycle : part of aerobic metabolism

Q: Many isolated enzymes, if incubated at 37°C, will be denatured. However, if the enzymes are…

A: The enzyme is a protein that depends on many factors for its stability. It needs an optimal range of…

Q: What is the key enzyme of the pentose phosphate pathway also serving as the first enzyme of the…

A: The pentose phosphate pathway (PPP) is an alternate or parallel metabolic pathway to glycolysis.…

Q: The thiolate anion of CoA acts as a/an nucleophile attacking the carbonyl carbon of the enzyme bound…

A: Fatty acid are activated to acyl CoA by thiokinase or acyl CoA synthetase. This step occurs in…

Q: Some archaebacteria produce an enzyme with two active sites: one catalyzes the dephosphorylation of…

A: Archaebacteria contains an enzyme Fructose-1,6-bisphosphate aldolase which is a bifunctional enzyme…

Q: Enzymes occasionally display weak "side" activities. Draw the structure of the product (other than…

A: Pyruvate is formed in the last step of glycolysis with release of one ATP per molecule, catalyzed by…

Q: How is a “committed step” defined in the context of a metabolic pathway and why are they important?…

A: A metabolic pathway is a chain of biochemical reactions linked together by their intermediates.…

Q: Since cells of Halobacterium require high levels of Na+ for growth,why is this not true for the…

A: The Halobacterium belongs to the domain Archaea. These bacteria metabolize in an aerobic environment…

Q: is the type of enzyme specificity exhibited by hydrolysis of urea using urease

A: Since you have asked multiple questions, we will solve the first three questions for you. If you…

Q: This enzyme, dehydrogenase, belongs to the following group of EC number: O a. EC1: Oxidoreductase O…

A: Enzymes are the biocatalyst molecules that can act as catalyst in the biochemical reaction and can…

Q: The enzyme chymotrypsin, catalyses the hydrolysis of nitrophenyl acetate and other acyl esters. Name…

A: Chymotrypsin is a protease that belongs to the class hydrolase. It is a serine protease due to the…

Q: Lysozyme catalyzes a "bi-bi" reaction. List, in order, the reactants that bind and the products that…

A: Enzymes are biological molecules (typically protein) that significantly speed up the rate of…

Q: Is the reaction reversible Steps Structural Structural Formula activator and formula of the product…

A: Glycolysis is the cellular metabolic pathway where the six-carbon glucose molecule was hydrolyzed…

Q: Streptokinase is an enzyme produced by Streptococci bacteria and is used to digest fibrin clots. It…

A: Introduction  Streptokinase (SK) is an enzyme and thrombolytic drug. In some cases of myocardial…

Q: Glutamine affects the regulatory system for E. coli glutamine synthetase so as to promote the…

A: Glutamine : It is an alpha amino acid that is used in the biosynthesis of proteins. Its side chain…

Q: This is a conjectural question: If the reactive part of coenzyme A is the thioester, why is the…

A: Coenzyme A Is an important coenzyme that plays an important role in many metabolic pathways.the…

Q: Normal cells die in a nutrient medium containing thymidine and methotrexate, whereas mutant cells…

A: Methotrexate is a chemotherapy agent which is used to treat cancer, autoimmune diseases, ectopic…

Q: The sedimentation value of aspartate transcarbamoylase decreases when the enzyme switches to the R…

A: The first step in the pyrimidine biosynthetic pathway is catalyzed by aspartate…

Q: Hb serves as our model for regulation of enzyme reaction rates. But Hb is not a Explain the…

A: Oxygen is required for the generation of ATPs in all the metabolically active cells of the body and…

Q: An enzyme with a low Km is considered to have a higher affinity for the substrate. Provide…

A: Michaelis–Menten proposed the enzyme kinetics model that describe the characteristics of the…

Q: Is Glu-97 directly involved in reaction with the substrate (substrate = DHAP, enzyme = TIM)? What…

A: In case of enzyme TIM (triosephosphate isomerase), Glu-97 remain present adjacent to the active site…

Q: For the following reactions, name both the enzyme that catalyzes the reaction and the required…

A: Carboxylation reactions involve addition of CO2 to a substrate and production of a carboxylic acid…

Q: if there are twelve different intermediate products produced in the stage of a metabolic within a…

A: Cellular metabolism is the set of metabolic reactions that occur in living organisms in order to…

Q: The class of the enzyme catalyzing the reaction shown in this figure is a(n) Choose the one best…

A: Given, that the enzyme can catalyse the conversion of glucose to glucose-6-phosphate by transferring…

Q: If acetyl-CoA containing radiolabeled carbons in the acetyl group was used to synthesize leucine,…

A: Amino acids are biosynthesized from the intermediates of glycolysis, tricarboxylic acid cycle or the…

Q: The purinosome contains enzymes that convert the serine hydroxymethylgroup to the formyl group of…

A: Purinisome is a multi-enzyme complex. It catalyzes the de novo purine nucleotide biosynthesis in the…

Q: Dicyclohexylcarbodiimide (DCCD) is a reagent that reacts with Asp or Glu residues. Explain why the…

A: ATPase is the enzyme complex, which is known to synthesize ATP by transferring protons and…

Q: What is the mechanism of an enzyme reaction involving a coenzyme for Nucleophilic Addition Rxns?…

A: Enzymes are essential components of all metabolic processes in the body. They are catalytic…

Q: Some microorganisms lack DHFR activity, but their thymidylate synthase has an FAD cofactor. What is…

A: An organism evolves to find an alternative mechanism to continue the biochemical process. FAD is a…

Q: What are the similarities and differences in the regulation of monomeric, single substrate and…

A: Monomeric enzymes are the one which have a single polypeptide chain like lysozyme and hexokinase…

Q: In _____________ inhibition, the EI complex readily dissociates and the enzyme is again available…

A: Enzyme inhibition refers to a decrease in enzyme-related processes, enzyme production or enzyme…

Q: All coenzymes are cofactors, but not all cofactors are coenzymes. Explain this statement.

A: Co-factors and coenzymes are an important part of enzyme biochemistry. Cofactors act as the helper…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.