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Not yet answeredMarked out of 1.00Flag questionQuestion textUsing the information obtained from the enzyme animation in the virtual lab and your textbook, answer the following questions in the lab report.Which of the following does NOT apply to an enzyme?Select one:a. Catalystb. Inorganicc. Proteind. All of the above apply to an enzymeQuestion2Not yet answeredMarked out of 1.00Flag questionQuestion textWhich of the following would interfere most with the ability of an enzyme to catalyze a reaction?Select one:a. Reduced concentration of substrate availableb. Reduced concentration of product availablec. Increased concentration of substrate availabled. A change in the pHQuestion4Answer savedMarked out of 1.00Flag questionQuestion textFeedback mechanisms regulate the rate of enzyme activity, effectively “turning off” an enzyme in a reversible way until more product is needed. Which of the following would be most effective as a feedback mechanism?Select one:a. Reduced concentration of productb. Increased concentration of substratec. A change in pHd. Temporary binding of a non-substrate molecule in the active siteQuestion5Answer savedMarked out of 1.00Flag questionQuestion textWhich of the following statements is accurate in describing the activity of the lactase enzyme?Select one:a. Lactase can function equally effectively at many different pH levelsb. The shape of lactase does not change during the reactionc. Lactase is converted to glucose and galactose by the reactiond. One lactase enzyme can catalyze many reactions When an enzyme catalyzes a reaction:Select one:a. Substrate(s) bind in the active siteb. Products bind in the active sitec. The shape of the enzyme remains unchangedd. The enzyme is consumed by the reactionQuestion6Not yet answeredMarked out of 4.00Flag questionQuestion textMatch the following definitions as they apply to chemical reactions:Catabolic· Drag answer hereAnabolic· Drag answer hereEndergonic· Drag answer hereExergonic· Drag answer here· large molecules broken down into smaller ones· energy exiting the reaction; reactants contain more· small molecules built into larger ones· energy entering the reaction; products contain moreqIs the action of the enzyme illustrated in the video:Anabolic or catabolic?Endergonic or exergonic?Question8Not yet answeredMarked out of 1.00Flag questionQuestion textIs the action of lactase:1. Anabolic or catabolic? 2. Endergonic or exergonic? Question9Not yet answeredMarked out of 1.00Flag questionQuestion textWhy is enzyme activity similar to, but not exactly like, a “Lock” and “Key”?Question10Not yet answeredMarked out of 1.00Flag questionQuestion text# Product Molecules/minute at:Amount of Substrate(Lactose)pH 3pH 5pH 7pH 9pH 110.5 g1.0g2.0g4.0g8.0 gQuestion11Not yet answeredMarked out of 1.00Flag questionQuestion textWhat substrate amount was required to achieve the maximum reaction rate?Select one:a. 1.0 gb. 4.0 gc. 2.0 gQuestion12Not yet answeredMarked out of 1.00Flag questionQuestion textAt what pH level did the maximum reaction rate occur?Select one:a. 3b. 1c. 7Question13Not yet answeredMarked out of 1.00Flag questionQuestion textWhy was there no increase in the reaction rate with 8.0 g. of substrate as compared to 4.0 g. of substrate? What would you need to add to see an increase in the reaction rate with 8.0 g. of substrate?Question14Not yet answeredMarked out of 1.00Flag questionQuestion textIn the graph you created in the lab simulation with your data:a. What is represented by the green line?b. What is the optimal pH for lactase enzyme activity?

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