BIOMOLECULES AND ENZYMES

Detailed explanation-1: -It is important to remember that enzymes do not change whether a reaction is exergonic (spontaneous) or endergonic. This is because they do not change the free energy of the reactants or products.

Detailed explanation-2: -Enzymes cannot make endergonic reactions exergonic. Enzymes are molecules that can catalyze a certain reaction in order to speed up the rate of reaction. Enzymes, however, cannot change fundamental aspects of the reaction, since these aspects of the reaction are dictated by the actual spontaneity of the reaction.

Detailed explanation-3: -The correct answer: The statement that is false about the enzymes d. A specific enzyme can catalyze a variety of chemical reactions. The enzymes are basically proteins that are produced from the secretory cells.

Detailed explanation-4: -In nature, exergonic reactions do not require energy beyond activation energy to proceed, and they release energy. They may proceed without enzymes, but at a slow rate. Conversely, endergonic reactions require energy beyond activation energy to occur.

Detailed explanation-5: -Notes About the Reactions In biochemical systems, endergonic and exergonic reactions often are coupled, so the energy from one reaction can power another reaction.