Which of the following are true statements concerning enzymes?

A. During the hydrolysis reaction in which maltose is broken down into its two glucose monomers, enzymes speed up the reaction by directly attacking and breaking the covalent bonds holding the two glucose molecules together.

B. Enzymes generally catalyze only very specific biochemical reactions.

C. Enzymes increase the rate of biochemical reactions in cells by adding energy to the reactions.

D. Enzymes are synthesized in the nucleolus of eukaryotic cells.

E. Most enzymes are proteins composed of amino acids.

F. The cells of both eukaryotes and prokaryotes all contain enzymes.

G. If the active site of an enzyme is altered, the enzyme is unable to catalyze the biochemical reaction.

H. Once used to catalyze a biochemical reaction, enzymes lose their activity; making them unable to catalyze the reaction again

B. Enzymes generally catalyze only very specific biochemical reactions.

E. Most enzymes are proteins composed of amino acids

F. The cells of both eukaryotes and prokaryotes all contain enzymes.

G. If the active site of an enzyme is altered, the enzyme is unable to catalyze the biochemical reaction.

Explanation:

Enzymes refers to substances that acts as a catalyst in living organisms. They regulate the rate at which chemical reactions proceed without being altered in the process. Enzymes regulate the biological process that occur within living organisms.

Enzymes catalyze all aspects of cell metabolism such as digestion of food, conservation and transformation of chemical energy and the construction of cellular macromolecules from smaller precursors.

Application of enzymes

1. Industrial application

2. Medical application

1. Enzymes can be used for industrial application such as beer brewing, wine fermentation, bread leavening.

2. Enzyme can also be applied in the medical aspects for killing disease-causing microorganisms, promoting wound healing, and diagnosing some diseases.