10/05/2020 Enzymes(Senior Class Biology Study by Topics) 0Comments by Gate Academy Please fill in the information below. NAME EMAIL PHONE NUMBER 1. Active site is?Balance of living organism can affect the enzymeWhere the enzyme and molecule bond togetherWhere the reactant fits into the enzymeWhere there is a shape change that occurs when bonding2. Which of this vitamin is associated with the coenzyme Biocytin?PyridoxineBiotinNicotinic acidThiamine3. Which of the following takes place due to phosphorylation of isocitrate dehydrogenase?Inhibits the binding of citrate at active siteNo reactionDegrades the enzymeEnhances the substrate-binding affinity4. Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen to cellular metabolism?Bacterial dinitrogenase reductaseBacterial dinitrogenase oxidaseBacterial glutamine synthasePhosphatase5. Co factors areInterfere with protein bondsOrganic co factorsNon protein substances that help to facilitate enzymesTrigger enzyme to quit producing insulin6. Forming and breaking bonds requires ________ depending upon what kind of a reaction you have.fusionproteinenergyfuel7. What is the binding energy?The energy required to form a bondFree energy released in the formation of enzyme-substrate interactionThe energy required to bind substrateIt is the activation energy8. Name the enzyme which catalyzes the oxidation-reduction reaction?OxidoreductaseGlutamine synthetaseTransaminasePhosphofructokinase9. Which graph shows the effect of pH on enzyme activity? Graph AGraph BGraph CGraph D10. Inhibitors areFight for positionUse the active siteChemical that interfere with enzyme activityLook like the substrate11. Which line in the graph shows the presence of an enzyme in a chemical reaction? Line 1Line 212. Which one is not an enzyme used for MI diagnosis?ASTLDHTroponin TALT13. Which of the following is true about enzymes?All of the above.Enzymes only work when conditions are prefect for them.When the shape of the enzyme is lost – this is called DENATURING.They are all dependent on certain factors like Temperature and pH.14. How many types of enzymatic regulation mechanism occurs in the cells?245315. Which of the following is false about feedback regulation?The best example is the biosynthesis of L-isoleucine from L-threonine in bacteriaThe synthesis of concerned enzyme is inhibited by interfering with the gene of that enzymeConcentration of enzyme is reduced by the end productIt is a type of enzymatic activity regulation16. Study the diagram below. Which of the following is the substrate? Hydrogen peroxideCatalaseWaterOxygen17. The following is the right optimal pH for most enzymes and stomach enzymes except?All of the abovePH of 2 for stomach enzymesPH 6 - 8 for most enzymes.PH 5 - 9 for most enzymes.18. Which of the following function is catalyzed by Racemases?Interconversion of L and D stereoisomersRemoval of waterInversion of asymmetric carbon atomIntramolecular transfer of a functional group19. What is the nature of an enzyme?ProteinCarbohydrateVitaminLipid20. Name the enzyme secreted by pancreas?ChymotrypsinAlcohol dehydrogenasPepsinTrypsin21. What is the function of phosphorylase?Transfer amino groupUse H2O2 as the electron acceptorTransfer a carboxylate groupTransfer inorganic phosphate22. Cellulose is a tough component of plant fiber. Animals such as cows, horses and goats are able to digest cellulose because of their enzyme called ___________(leave answer in lowercase)23. Which of the following is NOT an enzyme?CatalasePepsinAmylaseSucrose24. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation?Dinitrogenase oxidaseDinitrogenase reductasePhosphataseKinase25. ___________ inhibitors change the shape of an enzyme.NondistributiveNoncompetitiveCompetititveDistributive26 out of 25Time is Up!