Which of the statements about the biochemical pathways of cellular respiration is/are correct?

1. During anaerobic respiration in plants and yeast, the reduction of ethanal to ethanol regenerates oxidized $NA{D}^{+}$, allowing glycolysis to continue.
2. In oxidative phosphorylation, the transfer of electrons along the electron transport chain drives the active transport of protons ($H^{+}$) from the mitochondrial matrix into the intermembrane space.
3. During glycolysis, glucose is directly oxidized to triose phosphate, which is then phosphorylated using ATP to form pyruvate.