LIFE SCIENCE

Detailed explanation-1: -Anabolism and catabolism Two types of metabolic reactions take place in the cell: ‘building up’ (anabolism) and ‘breaking down’ (catabolism).

Detailed explanation-2: -Metabolism includes anabolic (reactions where new molecules are synthesized) and catabolic reactions (reactions where molecules are broken down), and is commonly defined as the sum total of all the chemical reactions.

Detailed explanation-3: -It is important to know that the chemical reactions of metabolic pathways do not take place on their own. Each reaction step is facilitated, or catalyzed, by a protein called an enzyme. Enzymes are important for catalyzing all types of biological reactions-those that require energy as well as those that release energy.

Detailed explanation-4: -building up body tissues and energy stores (called anabolism) breaking down body tissues and energy stores to get more fuel for body functions (called catabolism)