For every step in the PDF, ask:

: Detailed chapters on the metabolism of the four primary classes of biomolecules: : Synthesis and degradation. Carbohydrates : Glycolysis and other sugar pathways. Amino Acids : Breakdown and protein building blocks. Nucleotides : Synthesis of DNA and RNA components. Natural Product Biosynthesis

This is often the most valued section of the PDF. Vitamins are not just nutrients—they are organic reagents repurposed by evolution. The PDF details:

Forming a temporary bond between the enzyme and the substrate.