pentose phosphate pathway in biology: Definition, Types and Importance AESL Glucose metabolism begins with its transport into cells via GLUT transporters, where it is phosphorylated to glucose 6 phosphate (Glucose 6 P). This molecule can enter various pathways, including the pentose phosphate pathway or hexosamine biosynthesis. The pentose phosphate pathway in health and disease Nature Metabolism Pentose Phosphate Pathway Concise Medical Knowledge