Answer: two
The first five steps of Glycolysis are regarded as the preparatory (or investment) phase since they consume energy to convert the glucose into two three-carbon sugar phosphates (G3P). The first step is phosphorylation of glucose by a family of enzymes called hexokinasesto form glucose 6-phosphate (G6P). This reaction consumes ATP but it acts to keep the glucose concentration low promoting continuous transport of glucose into the cell through the plasma membrane transporters. In a…
Four molecules of ATP per glucose are actually produced however two are consumed as part of the preparatory phase. The initial phosphorylation of glucose is required to …
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Next each glucose molecule is broken down into two pyruvate molecules in a process known as glycolysis. Glycolysis is summarized by the equation: C 6 H 12 O 6 + 2 ADP + 2 P i + 2 NAD + → 2 CH 3 COCOO − + 2 ATP + 2 NADH + 2 H 2 O + 2 H + CH 3 …
The theoretical maximum yield of AT…