One of these reactions causes the color change measured in the MTT assay for cell viability.
One of these reactions causes the color change measured in the MTT assay for cell viability. The CoRR hypothesis argues that the co-localization of genes and products in chloroplasts and mitochondria allows for control of gene expression through these reactions. A tripeptide that undergoes these types of reactions gives rise to the GSH/GSSG ratio, a marker of a type of cellular stress; that tripeptide is (*) glutathione. In lactic acid fermentation, as pyruvate acts as both an acceptor and a donor, it undergoes a specific type of these reactions called disproportionation. These reactions are responsible for the interconversion between NAD+ and NADH. Cellular respiration is one example of these reactions. For 10 points, name these reactions exemplified by free radical reactions, as they involve electron transfer. 
One of these reactions causes the color change measured in the MTT assay for cell viability.
redox reactions [accept oxidation-reduction reactions; accept reduction-oxidation reactions; prompt on "oxidation reactions"; prompt on "reduction reactions"; anti-prompt on "disproportionation"] 