Answer:
B. Enzymes decrease the activation energy;
C. Enzymes increase the rate of the reaction;
E. Enzymes provide a site where reactants can be brought together.
Explanation:
Enzymes increase the rate of biochemical reactions
Enzymes are protein or RNA molecules that increase the rate of biological reactions happening in the body. These biological reactions are required for various processes like digestion, respiration, excretion etc.
Enzymes help in building up substances (anabolism) or breaking them down (catabolism). Enzymes are naturally produced by our bodies. The salivary amylase enzyme present in saliva begins the process of carbohydrate breakdown in the month itself. The enzymes are also produced by the liver and pancreas which aid in digestion.
Each type of enzyme is specific for its substrate or a group of its substrates. Therefore every enzyme has only one function to perform.
Without the intervention of enzymes, biological reactions are really slow but they are required to be fast for the maintenance of life processes.
Therefore enzymes are essential for the rate of biological chemical reactions.
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