What is true about all chemical equations?
Links are reported

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Ab c or d ? i’m not sure what the answer is