AP BIOLOGY

Detailed explanation-1: -Each reaction in glycolysis is catalyzed by its own enzyme. The most important enzyme for regulation of glycolysis is phosphofructokinase, which catalyzes formation of the unstable, two-phosphate sugar molecule, fructose-1, 6-bisphosphate 4start superscript, 4, end superscript.

Detailed explanation-2: -Each step of glycolysis is catalyzed by specific enzymes, which are upregulated in different kinds of tumors. The three key enzymes are hexokinase, phosphofructokinase and pyruvate kinase.

Detailed explanation-3: -Answer and Explanation: The correct answer is e. Oxygen is not required. The statement regarding glycolysis which is true is oxygen is not required.

Detailed explanation-4: -The last step in glycolysis is catalyzed by the enzyme pyruvate kinase. Conversion of the serendipitously named PEP into pyruvate results in the production of a second ATP molecule by substrate-level phosphorylation and the compound pyruvic acid (or its salt form, pyruvate).

Detailed explanation-5: -Glycolytic Enzymes Are Located on the Outside of the Mitochondrion. Subfractionation of mitochondria indicated that at least four of the glycolytic enzymes are located either in the mitochondrial IMS or associated with the OMM, but it was not possible to discriminate between the two locations.