Question 11 of 27 Map A Sapling Learning macmillan learning The graph below illu

Question

Question 11 of 27 Map A Sapling Learning macmillan learning The graph below illustrates the reaction speed (rate) of an enzyme-catalyzed reaction at different temperatures Above what temperature does the speed of the reaction slow? Number 10 20 30 40 500 Temperature C) The reaction rate slows because the temperature affects the function of the enzyme. Keeping in mind that enzymes are proteins, pick the best reason why enzyme function declines above a certain temperature. O Enzymes are more sensitive to inhibitors at higher temperatures. o Enzyme structure is distorted by heat, and it cannot bind substrate O Nucleotides cannot form hydrogen bonds at high temperatures. O The primary structure of the enzyme is disrupted by heat. Previous 3 Give Up & View Solution Check Answer Next Exit Hint

Explanation / Answer

Q1.

The reaction is at a maximum about T = 37°C (human body temperature) then after this Temperature, the kinetics decrease drastically

Q2.

The proteins will

a) enzymes are more sensitiv eto inhibitors --> false

b) enzymes structure is distorted by heat, and cannot bind substrate --> True, this is in fact the case, at higher T the enzyme wil change of shape, therefore, the active site will no longer fit the substrate

c) false, h-bonding has nothing to do here, and that T is not the reason

d) false, actually, they are thertiary in structure

choose B

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