Methylene Blue,2,4-Dinitrophenol,and Oxygen Uptake of Intact and Homogenized Embryos. ∗

Abstract

Summary

1. M.B. and 2,4-D.N.P. produce augmentation of oxygen uptake of intact grasshopper embryos. 2. M.B. produces augmentation of oxygen uptake of homogenates made from embryos. 2,4-D.N.P. does not produce significant augmentation of oxygen uptake of homogenates. 3. M.B. produces augmentation of oxygen uptake of intact nuclei and not of mitochondria or cytoplasmic constituents. 4. 2,4-D.N.P. does not affect oxygen uptake of isolated nuclei or mitochondria or other cytoplasmic constituents.