electron transport pathway - respiration - methylene blue

[Cazzii]

it says in my book, (advanced biology principles and applications) that the H2 are oxidised off the NAD to water.
methylene blue is my hydrogen acceptor, and when it gets the H2 it turns clear, however, when the electron transport pathway happens surely my methylene blue would lose its H2 and turn back blue.

Does this explain why after the methylene blue has turned clear, (by accepting H2) if its shaken, it returns to the blue colour? (its being oxidised into water)

please respond asap
xxx

[david23]

yeah pretty accurate, except change your wording, "being oxidized into water" is wrong. M Blue is being oxidized, but the water is from H2 going to O2, I think U know that.