Below is a list of standard reduction potentials for biological half cell reactions. Using this Table answer the questions below: Succinate + CO2 + 2H+ + 2e- → alpha ketoglutarate + H2O

Eo ’ in volts -0.67

Oxaloacetate (OAA) + 2 H+ + 2e- → malate

Eo ’ in volts -0.17

Fumarate + 2 H+ + 2e- → succinate

Eo ’ in volts -0.03

(a). Under standard conditions, which metabolite would spontaneously reduce oxaloacetate (OAA)? (write the name of the metabolite)

(b). Write the possible reactions: