A Dockerty

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Organelles were isolated from dark-grown Euglena gracilis Klebs by sucrose density gradient centrifugation. Plastids, identified by triosephosphate isomerase and NADP glyoxylate reductase were present at an equilibrium density of 1.24 grams per cubic centimeter clearly separated from mitochondria at an equilibrium density of 1.22 grams per cubic centimeter.(More)
Light was not essential for the development of ribulose-1,5-diphosphate carboxylase protein or catalytic activity in the photosynthetic cotyledons of germinating castor beans (Ricinus communis). Cotyledons developing in the dark showed higher activity than those in the light. Returning cotyledons developing in the light to darkness resulted in a significant(More)
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