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GLYCOLYSIS Each step of the glycolytic pathway requires the use of a specific This process occurs in the of the cell and does not require Thus, it is part of respiration. The first step of glycolysis is "energy-requiring". This energy is made available when an molecule donates a group to glucose (G6P). The major products of this reaction are (G6P) and The (G6P) is converted to (F 6-P). A second is used to transfer a (F1,6-BP) has been formed. The backbone splits apart to form two 3-carbon molecules of (G3P). One becomes a temporary DHAP molecule. Each molecule of called an electron or energy carrier reacts with a molecule of In this reaction, and are gained by NAD+ converting it to NADH (thus 2 NADH are formed). Since NAD + gained electrons (and hydrogen), it has been Since G3P lost electrons (and hydrogen), it has been As well, each G3P gains a group (inorganic phosphate) (BPG). in the cytoplasm. This produces two molecules of molecule Each molecule of BPG donates a phosphate group to an Such a transfer from a glycolysis producing molecules of This step of intermediate to ADP is called "substrate was made. This leaves two molecules of (3PG). Each 3PG is converted into (2PG). Each 2-PGA releases a water molecule leaving two molecules of (or PEP). Each PEP performs "substrate-level phosphorylation" by donating a group to an molecule producing two more This leaves two 3-carbon molecules of Net Products of Glycolysis: Q ATP NADH 2 pyruvate 1