Biology Cellular respiration? Glycolysis?

If it’s a strange picture, you just have to resort to what you learned with proper images and texts.

Glucose is shown above, and it is false. It contains 6 carbon atoms, but only 5 are in the ring, one is outside. 2 triple sugar, glycerol aldehyde m. W., which are oxidized to pyruvate, are formed.

In the middle, ethanol is to be formed, with 2 carbon atoms. One goes off as carbon dioxide. However, NADH becomes NAD+, just vice versa as in the picture.

Below is the citrate cycle, above the introduction of the acetyl-CoA (activated acetic acid, 2 C atoms) by combination with oxalic acetate (4 C atoms) to citrate (6 C atoms).

Hope to have eliminated the unclearness.