AP BIOLOGY

Detailed explanation-1: -The conversion of 2-phosphoglycerate to 2-phosphoenolpyruvate is an intermediate step in glycolysis. This conversion is catalyzed by the enzyme enolase and the cofactor involved is metallic magnesium or manganese.

Detailed explanation-2: -Glyceric acid is a natural three-carbon sugar acid obtained from the oxidation of glycerol. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Salts and esters of glyceric acid are known as glycerates.

Detailed explanation-3: -3-phosphoglyceric acid is a monophosphoglyceric acid having the phospho group at the 3-position. It is an intermediate in metabolic pathways like glycolysis and calvin cycle. It has a role as a fundamental metabolite and an algal metabolite. It is a tetronic acid derivative and a monophosphoglyceric acid.

Detailed explanation-4: -3-Phosphoglyceric acid (3PG, 3-PGA, or PGA) is the conjugate acid of 3-phosphoglycerate or glycerate 3-phosphate (GP or G3P). This glycerate is a biochemically significant metabolic intermediate in both glycolysis and the Calvin-Benson cycle. The anion is often termed as PGA when referring to the Calvin-Benson cycle.