MULTIPLE CHOICE-- Please answer properlyQUESTION :Which of the following best describes the transitionstate of a catalyzed reaction?A. higher in energy than that of an uncatalyzedreactionB. lower in energy than that of an uncatalyzed reactionC. bound very weakly to the catalystD. lower energy than the reaction substrate

An enzyme is a type of biocatalyst that speeds up chemical reactions without altering the reaction…

Answered: QUESTION : Which of the following best…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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VI - BIOMOLECULES Instructions : - Answer the question properly. - Please do not copy here in Bartleby - Explain why did you choose that answer in 3-5 sentences. QUESTION : 1. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation? A. Dinitrogenase reductase B. Dinitrogenase oxidase C. Phosphatase D. Kinase
BIOMOLECULES - MULTIPLE CHOICE - Please answer properly QUESTION : Supposed you used the enzyme lyase in the biomolecular laboratory, identify reaction that you have certainly observed with the enzyme Lyase. A. you observed intramolecular rearrangement of bonds B.you observed a transfer group from one molecule to another C. you observed breaking of bonds D. you observed formation of bonds
BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Major controls of de novo AMP synthesis include: 1. allosteric inhibition by GMP. 2. allosteric inhibition by AMP. 3. availability of PRPP. 4. stimulation by GTP A. 1, 2, and 3 B. 1, 2, 3, and 4 C. 2 and 4 D. 1 and 3
Modified TRUE or FALSE. Write the word TRUE if the statement is correct. If the statement is false, write the incorrect underlined word/s and indicate the correct word/s to make the statement true. The Michaelis-Menten Constant (Km) of an enzyme is equal to the enzyme concentration at which the initial velocity of the reaction is one half of maximum velocity (Vmax).
BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Supposed you used the enzyme lyase in the biomolecular laboratory, identify reaction that you have certainly observed with the enzyme Lyase. A. you observed breaking of bonds B. you observed formation of bonds C. you observed intramolecular rearrangement of bonds D. you observed a transfer group from one molecule to another 2. Comprehend the following statements and identify the one that accurately describes an allosteric enzyme. A. It is versatile, in that it can act as either an anabolic enzyme or a catabolic enzyme B. It is regulated by binding to small molecules other than its substrate C. It operates most optimally in a basic environment D. It operates most optimally in an acidic environment
Modified TRUE or FALSE. Write the word TRUE if the statement is correct. If the statement is false, write the incorrect underlined word/s and indicate the correct word/s to make the statement true. The reaction involving the substrate bound to the active site of an enzyme is made more favorable by increasing the activation energy of the reaction.
multiple choice, choose the correct answer Under which of the following conditions would an enzyme fail to be accurately described by the M-M equation:1. kcat >> k1 or k-12. In the presence of a negative allosteric effector3. At low concentrations, the reaction is first order with respect to substrate concentration4. At high concentrations the reaction is zero order with respect to substrate
BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. What is the reason why the transition state of a catalyzed reaction is lower has lower energy compared to an uncatalyzed reaction? A. because enzymes only work at low temperatures B. because of favorable interactions with the substrate C. because of enthalpic interactions between the enzyme and the transition state D. A and B 2. The antibody-antigen binding site is different from an active site of an enzyme because an enzyme’s active site* A. is complementary to a specific ligand B. catalyzes a chemical reaction C. contains amino acids without sidechains D. contains modified amino acids
Multiple choice correct answer and explain every point 2. The factors that contribute to the enhancement of the rate of reactionsa) Specific inhibitor macromoleculesb) Product inhibitionc) Availability of substrate and activator cofactord) Covalent catalysise) Proximity and orientation effects
BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Which of the following statements is TRUE in the catabolism of cytidine triphosphate (CTP)? A. the nitrogen-containing ring will be oxidized B. nitrogen will be released in the form of ammonia (ammonium ion) C. the final product will have the same type of nitrogen-containing ring as CTP D. hypoxanthine will be an intermediate 1. A 7-year-old boy suffers from mental retardation and self-mutilation and has an increased levels of serum uric acid. These symptoms are characteristic of Lesch Nyhan syndrome, which is due to defective ________? A. Xanthine oxidase B. Denovo synthesis of pyrimidines C. HGPRT (Hypoxanthine Guanine Phospho Ribosyl Transferase) D. Salvage pathway for pyrimidine biosynthesis
BIOMOLECULES - Please answer the questions properly. - Multiple choice Qyestion 1 : If a cell has an adequate supply of adenine nucleotides but requires more guanine nucleotides for protein synthesis: 1. Glutamine-PRPP amidotransferase will not be fully inhibited. 2. AMP will be a feedback inhibitor of the condensation of IMP with aspartate. 3. ATP will stimulate the production of GMP from IMP. 4. ATP will inhibit nucleoside diphosphate reductase. A. 1, 2, and 3 B. 2 and 4 C. 1, 2, 3, and 4 D. 1 and 3
BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Enzymes have known attributes and functions. Which of the following is NOT its common attribute or function? A. enzymes are specific B. enzymes may be used many times for a specific reaction C. enzymes provide activation energy for reactions D. enzyme activity can be regulated 2. Evaluate the following statements and identify the best that can describe how a lysozyme works.? A. It cuts the bond in a polysaccharide, by holding six sugars in a row in its active site, and adding a water molecule, causing hydrolysis. B. It is responsible for the cleaving of amino acid chains via the ping-pong mechanism. C. It cleaves the phosphodiester bond in nucleic acids, via hydrolysis. D. It hydrolyzes bonds in lipids, causing a split in a fatty acid chain.

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QUESTION : Which of the following best describes the transition state of a catalyzed reaction? A. higher in energy than that of an uncatalyzed reaction B. lower in energy than that of an uncatalyzed reactior C. bound very weakly to the catalyst D. lower energy than the reaction substrate