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. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation?PhosphataseKinaseDinitrogenase reductaseDinitrogenase oxidase2. Energy is _______________ by the products in endergonic chemical reactions.reversedtransferredabsorbeddistributed3. Name the coenzyme of riboflavin (B2)?Coenzyme ANAD or NADPFAD and FMNThiamine pyrophosphate4. Which one is not an enzyme used for MI diagnosis?ASTALTTroponin TLDH5. ___________ reactions are chemical reactions that build or synthesize products by combining the substrates.(leave answer in lowercase)6. Which one is not correct about ATP?Which one is not correct about ATP?Potential of moleculesMade by adding a phosphate to ADPATP is the energy molecule of cellsPowers nearly all of cellular work7. Which of the following takes place due to phosphorylation of isocitrate dehydrogenase?Degrades the enzymeNo reactionEnhances the substrate-binding affinityInhibits the binding of citrate at active site8. Enzymes end in - aseTrueFalse9. The following are correct about enzyme inhibitors except?All of the aboveCompetitive inhibitors bind to the active site of an enzyme.Noncompetitive inhibitors bind to the active site of an enzyme.Noncompetitive inhibitors bind to the allosteric site of an enzyme10. Enzyme increases the rate of reaction by lowering the activation energy.FalseTrue11. The allosteric inhibitor of an enzyme ______Participates in feedback regulationBinds to the active siteDenatures the enzymeCauses the enzyme to work faster12. Where does the reaction between the enzyme and the substrate take place at?InhibitorActive SightActivatorSubstrate13. Name the enzyme secreted by pancreas?TrypsinAlcohol dehydrogenasPepsinChymotrypsin14. A __________is a biocatalyst that increases the rate of the reaction without being changed.Aluminum oxideSilicon dioxideEnzymeHydrogen peroxide15. Excess final products in a series of chemical reaction causes _________ inhibition.(leave answer in lowercase)16. Co factors areNon protein substances that help to facilitate enzymesTrigger enzyme to quit producing insulinInterfere with protein bondsOrganic co factors17. Enzymes are reaction specific ( each reaction has a specific enzyme that catalyzes it)FalseTrue18. Which of the following is NOT true about enzymes?Enzymes lower the activation energyEnzymes react with the substrate in a chemical reaction.Enzymes are proteinsEnzymes catalyzes chemical reactions19. What is the binding energy?Free energy released in the formation of enzyme-substrate interactionThe energy required to bind substrateIt is the activation energyThe energy required to form a bond20. How many types of enzymatic regulation mechanism occurs in the cells?435221. Which of the following is true about enzymes?They are all dependent on certain factors like Temperature and pH.Enzymes only work when conditions are prefect for them.All of the above.When the shape of the enzyme is lost – this is called DENATURING.22. The following is the right optimal pH for most enzymes and stomach enzymes except?PH 6 - 8 for most enzymes.PH of 2 for stomach enzymesAll of the abovePH 5 - 9 for most enzymes.23. _____ is required to start a reaction. (leave answer in lowercase)24. 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 regulation25. Which of the following is the CORRECT function of enzyme, Peptidase?Remove phosphate from a substrateCleave amino bondsCleave phosphodiester bondRemoval of H2O26 out of 25Time is Up! Time's up
