Which molecules are produced by catabolism and used by anabolism to build macromolecules?

Prepare for the Microbial Metabolism Test. Utilize flashcards and multiple choice questions with helpful hints and detailed explanations. Ace your test with ease!

Catabolism provides the raw materials for biosynthesis by generating precursor molecules that serve as the building blocks for macromolecules. When nutrients are broken down, cells produce small units such as acetyl-CoA, sugar phosphate intermediates, amino acid fragments, and nucleotide precursors. These building blocks are then used by anabolic pathways to assemble proteins, nucleic acids, carbohydrates, and lipids, with energy and reducing power supplied by the catabolic reactions. Heat energy is mainly released as a byproduct, oxygen is consumed in respiration rather than produced, and water is often a byproduct rather than the essential source of building blocks. So the molecules produced by catabolism and used by anabolism to build macromolecules are the precursor molecules (building blocks).