. Cell chemistry; a collection of papers dedicated to Otto Warburg on the occasion of his 70th birthday. Warburg, Otto Heinrich, 1883-; Biochemistry. 350 K. DAMASCHKE, F, TODT, D. BURK, O. WARBURG VOL. 12 (1953) minutes later, after bringing the pO^ back to ca. by shutting off the compensating illumination for somewhat less than a minute, an equivalent amount of oxygen was added to the Chlorella suspension by means of extra red light, and now the respiration increased (compensation decreased) during, and due to, the course of the back reaction in the photosynthetic cycle (Curve 2). Or, a
. Cell chemistry; a collection of papers dedicated to Otto Warburg on the occasion of his 70th birthday. Warburg, Otto Heinrich, 1883-; Biochemistry. 350 K. DAMASCHKE, F, TODT, D. BURK, O. WARBURG VOL. 12 (1953) minutes later, after bringing the pO^ back to ca. by shutting off the compensating illumination for somewhat less than a minute, an equivalent amount of oxygen was added to the Chlorella suspension by means of extra red light, and now the respiration increased (compensation decreased) during, and due to, the course of the back reaction in the photosynthetic cycle (Curve 2). Or, as in Fig. 2, the respiration of a Chlorella suspension was first measured as an initial oxygen pressure P^ (here ) fell to a pressure P (here ) over a virtually linear time course. Illumination was then given until the pressure was returned, by oxygen production in photosynthesis, to Pg. Now, upon darkening, much more oxygen was consumed per minute ( times) than previously at the same pressure P^, clearly indicating a light-induced reaction of increased oxygen consumption not as- cribable to low oxygen pressure alone. THE PHOTOSYNTHETIC ENERGY CYCLE Fig. 2 and 5, 3, and 4 present typical galvanometric results, respectively obtained visually, photographically, and by pen-recording, that show various time courses of the aus. an aus 1' (hompensiert) 20" Rotes Ucht %0^ â Wieder kompensiert 0A%Og Konsfant - welsses Ucht Fig. 3. Photographic record of galvanometric observations on the photosynthetic cycle, with respi- ration compensated. References p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Burk, Dean. Amsterdam, Houston, Elsevier Pub. Co.
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