4. 1) Glucose enters the cell is phosphorylated
buy hexokinase, thus turning ATP into sugar
which is than trapped in the cell because the
plasma membrane is impermeable to ions.
phosphorylation makes glucose more
chemically reactive.
6. • 3) Another ATP is than invested to transfer a
phosphate group from ATP to the sugar by
phosphofructokinase.
7. • 4) Aldolase makes the sugar molecule split
into two different three-carbon sugars.
(glyceraldehyde-3-phosphate and
dihydroxyacetone phospate )
8. • 5) two isomers are now created
dihydroxyacetone phospate and
glyceraldehyde-3-phosphate.
9. Phase 2
Half way there do u understand it a little
bit more yet???
10. • 6) Triose phosphate dehydrogenase holds
onto glyceraldehyde-3-phosphate where it
than goes two reactions, the sugar is first
oxidized by the transfer of electrons from H+
to NAD+ making 2NADH. The enzyme uses the
released energy to attach a phosphate group
to the oxidized substrate.
11. • 7) Finally some ATP is produced the
phosphate group is transferred into ADP. For
every glucose molecule that goes through
glycolysis two ATP are produced by step 7.
12. • 8) Phosphoglyceromutase relocates the
remaining phosphate group to get it ready for
the next reaction.
13. • 9) Enolase causes a double bond to form
yielding phosphoenolpyruvate, the electrons
of substrate become rearranged to where they
now become unstable.
14. • 10) the last reaction produced more ATP by
changing the phosphate group from PEP to
ADP.Two more ATP are produced so now there
was four mad making a net gain of two ATP
and making 2 pyruvate.
