SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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enzymes are quickly used up
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most cellular reactions require a specific, unique enzyme
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They have to have some way to use up the protein that they consume
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enzymes are not very effective at speeding up reactions
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Detailed explanation-1: -Cells must produce many different enzymes because: rate of production of enzymes is important in regulating energy production by cells. enzymes are degraded quickly. most cellular reactions require a specific, unique enzyme.
Detailed explanation-2: -Answer and Explanation: The human body needs many different enzymes because of all of its complex metabolic activities and processes. The enzymes act as catalysts to the various metabolic chemical reactions that take place, and once the enzyme is used to catalyze a reaction, it’s gone, so it needs to be replaced.
Detailed explanation-3: -All enzymes isolated thus far are specific for the type of chemical reaction they catalyze-i.e., oxidoreductases do not catalyze hydrolase reactions, and hydrolases do not catalyze reactions involving oxidation and reduction.
Detailed explanation-4: -Which of the following best explains why enzymes are necessary for many cellular reactions? Enzymes supply the oxygen necessary for the reactions. Enzymes change reactants from solid to liquid during the reactions. The reactions take up too much space in the cell if enzymes are missing.
Detailed explanation-5: -Enzymes are proteins, and they make a biochemical reaction more likely to proceed by lowering the activation energy of the reaction, thereby making these reactions proceed thousands or even millions of times faster than they would without a catalyst.