Which of the following statements of enzymes are CORRECT?I           Enzymes are highly specificII         Enzymes are proteins that function as a catalystIII        Enzymes lower activation energy of chemical reactions *1 pointI and II onlyI and III onlyII and III onlyI, II and III

Enzyme without cofactor is called as ........*1 pointConjugated proteinHoloenzymeApoenzymeCoenzyme9.       Which of the following statements of enzymes are CORRECT?I           Enzymes are highly specificII         Enzymes are proteins that function as a catalystIII        Enzymes lower activation energy of chemical reactions *1 pointI and II onlyI and III onlyII and III onlyI, II and III10.       Which of the following molecules matches its property?I    Competitive inhibitor – similar shape to substrate and can occupy to the same active site. II   Prosthetic group – decreases the rate of enzymatic reaction by changing its structure.III  Active site – specific region of the enzymes which bind to the substrate*1 pointI and II onlyI and III onlyII and III onlyI, II and III11.    Which of the following does NOT occur in glycolysis?*1 pointRemoval of waterPhosphorylation of ADPReduction of NAD+Decarboxylation12.     How many ATP and NADH are formed from one molecule of glyceraldehyde-3-phosphate during the energy pay-off phase in glycolysis?*1 point1 ATP and 1 NADH.2 ATP and 2 NADH.2 ATP and 1 NADH4 ATP and 2 NADH13.    Which of the following processes DOES NOT involve in pyruvate oxidation?*1 pointOxidationDecarboxylationAttachment of coenzyme AOxidative phosphorylation14.    What are the products produced from one molecule of pyruvate that goes through pyruvate oxidation?*1 point2 Acetyl-CoA, 2 molecules of CO2 and 2 NADH + 2H+1 Acetyl-CoA, 1 molecule of CO2 and NADH + H+2 Acetyl-CoA and 2 NADH + 2H+1 Acetyl-CoA and NADH + H+15.       How many CO2 molecules are released in the Krebs cycle if two molecule of glucose is oxidized?*1 point2483216.      Which of the intermediate molecules in Krebs cycle has more than five carbons?*1 pointα-ketoglutarateSuccinyl-CoAFumarateIsocitrate17.       Which of the following is TRUE to describe the pathway of electrons in aerobic respiration?*1 pointglucose → FADH2 → electron transport chain → oxygenglucose → pyruvate → ATP → oxygenglucose → pyruvate → electron transport chain → FADH2 → ATPglucose → glycolysis → Krebs cycle → FADH2 → ATP18.      How many molecules of ATP are produced from the complete oxidation of three molecules of glucose in aerobic respiration?*1 point32387611419.     Choose the stages where substrate-level phosphorylation occurs in cellular respiration.I           GlycolysisII         Krebs cycleIII       Pyruvate oxidation*1 pointI and II onlyI and III onlyII and III onlyI, II and III20.      Which of the following are the industrial products of alcohol fermentation?I          DoughnutII         KimchiIII       Beer*1 pointI and II onlyI and III onlyII and III onlyI, II and III21.      What is the reaction center pigment in photosystem I at thylakoid membrane?*1 pointP600P680P700P78022.      Which statement is TRUE about Calvin cycle?*1 pointOccurs in thylakoid membrane.Require ATP and NADPH.Use sugar to produce CO2.Involves photosystem I and photosystem II23.     Which process DOES NOT occurs during Calvin cycle?*1 pointRegeneration of CO2 acceptorOxidation of NADPHRelease of oxygenUse ATP24.       Which of the following pathways is able to minimize photorespiration in cactus?*1 pointCrassulacean Acid MetabolismCalvin cycleC4 pathwayC3 pathway25.      What are the components required in non-cyclic electron flow?I    PhotonII   WaterIII  Carbon dioxide*1 pointI and III and IIIII and IIII, II and III

Which of the following best describes the nature of enzymes?ANon-protein, non-specific biological catalystsBNon-protein, specific biological catalystsCProtein, non-specific biological catalystsDProtein, specific biological catalysts

The incorrect statements regarding enzymes are :(A) Enzymes are biocatalysts.(B) Enzymes are non-specific and can catalyse different kinds of reactions.(C) Most Enzymes are globular proteins.(D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose.

Which of the following is NOT TRUE of enzymes?Group of answer choicesall enzymes are proteinsenzymes are changed in the reaction they performenzymes catalyze metabolic reactionsenzymes work on substratesenzymes lower activation energy of reactions

Which of the following statements are true of enzymes?SELECT ALL THAT APPLYEnzymes are permanently changed in a reaction.Enzymes are involved in catabolism but not in anabolism.Enzymes produce specific products from specific substrates.Enzymes provide a route from reactants to products that has a lower activation energy.Enzymes can be regulated to control cellular metabolism.All enzymes require cofactors for activity.