NEET BIOLOGY

Detailed explanation-1: -Catabolism is the break down of complex molecules. Catabolism is the breakdown of complex substances to their constituent parts (glucose, amino acids and fatty acids) which form substrates for metabolic pathways.

Detailed explanation-2: -catabolism, the sequences of enzyme-catalyzed reactions by which relatively large molecules in living cells are broken down, or degraded. Part of the chemical energy released during catabolic processes is conserved in the form of energy-rich compounds (e.g., adenosine triphosphate [ATP]).

Detailed explanation-3: -Catabolism is the branch of the metabolic process that breaks down complex, big molecules into smaller ones, yielding energy. It is the destructive branch of the metabolism that results in the release of energy. Each living cell depends on energy for its existence.

Detailed explanation-4: -During catabolic reactions, proteins are broken down into amino acids, lipids are broken down into fatty acids, and polysaccharides are broken down into monosaccharides. These building blocks are then used for the synthesis of molecules in anabolic reactions.

Detailed explanation-5: -Excerpt. Protein catabolism is the breakdown of proteins into absorbable monomers for further degradation or reassembly. Protein catabolism in the intestinal lumen is important for several reasons, one of which is mobilizing essential amino acids for absorption.