(Solved): Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by m ...

Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by malic enzyme. Pyruvate $$+{\mathrm{CO}}_2+{\mathrm{H}}^{?}+2{\mathrm{e}}^{?}?$$ Malate $$(E=?0.33\mathrm{V})$$ $${\mathrm{NADP}}^{+}+2{\mathrm{H}}^{+}+2{\mathrm{e}}^{?}?\mathrm{NADPH}+{\mathrm{H}}^{+}?(\mathrm{E}=?0.32\mathrm{V})$$ A student was instructed to combine the half-reactions above into a single redox reaction written to show the spontaneous direction of electron transfer. The student produced the following reaction as his answer. Pyruvate $$+{\mathrm{CO}}_2+2{\mathrm{e}}^{?}+\mathrm{NADPH}+{\mathrm{H}}^{+}?\mathrm{Malate}+\mathrm{NADP}+$$ What errors has the student made in writing the reaction? Choose one or more: A. Electrons should not be included in a balanced redox reaction. B. The electrons are not balanced in the equation. C. The NADP'/NADPH and pyruvate/malate conjugate redox pairs are not placed with an oxidant and reductant on each side of the reaction. D. The reaction is not written to show the spontaneous direction of electron flow.