LIFE SCIENCE

Detailed explanation-1: -A fundamental task of proteins is to act as enzymes-catalysts that increase the rate of virtually all the chemical reactions within cells. Although RNAs are capable of catalyzing some reactions, most biological reactions are catalyzed by proteins.

Detailed explanation-2: -Enzymes speed up a chemical reaction by lowering the activation energy required for the reactants to come together and react. Activation energy refers to the energy that is needed to trigger a chemical reaction between two or more reactants.

Detailed explanation-3: -A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction. The fact that they aren’t changed by participating in a reaction distinguishes catalysts from substrates, which are the reactants on which catalysts work. Enzymes catalyze biochemical reactions.

Detailed explanation-4: -Answer and Explanation: Enzymes act as catalysts in aqueous solutions. An aqueous solution is a water based mixture which contains various dissolved molecules. The properties of an aqueous solution determine how effective an enzyme is as a biological catalyst.

Detailed explanation-5: -Hydrolysis. Dehydration Reaction.