Thoir iomradh air an earrann gu h-ìosal agus an uairsin freagair a 'cheist às deidh sin san aon chànan ris an earrann: Earrann: Tha an dàrna ceum (hydroxylamine gu nitrite) air a dhèanamh gu ceum air cheum le dà enzyme eadar-dhealaichte. Hydroxylamine oxidoreductase (HAO), a 'tionndadh hydroxylamine gu nitric oxide. Ceist: Dè as urrainn atharrachadh gu nitric oxide?
hydroxylamine