. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 142 CHADWICK, LOVELL AND EGNER tr ui o. 120 - 100 80 60 40 O < 20. 1 1 1 1 1 1 1 1 1 1 3 456 78 9 10 II IE PH FIGURE 1. Variation in ChE activity of fly heads as a function of pH. Curve A. Residual activity after 30-minute exposures at indicated pH values; all measurements at pH in buffer. Curve B. Specific activity at indicated pH values, computed by correcting Curve C for degree of inactivation shown in Curve A. For fuller explanation, see text. Curve C. Activity meas- ured during 15-minute exposures at indicated pH
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 142 CHADWICK, LOVELL AND EGNER tr ui o. 120 - 100 80 60 40 O < 20. 1 1 1 1 1 1 1 1 1 1 3 456 78 9 10 II IE PH FIGURE 1. Variation in ChE activity of fly heads as a function of pH. Curve A. Residual activity after 30-minute exposures at indicated pH values; all measurements at pH in buffer. Curve B. Specific activity at indicated pH values, computed by correcting Curve C for degree of inactivation shown in Curve A. For fuller explanation, see text. Curve C. Activity meas- ured during 15-minute exposures at indicated pH values in buffer. The open circles give the mean values, and the vertical bars indicate the limits for ± 3 Curve D. Activity measured during 15-minute exposures at indicated pH values in water. Curve E. Activity measured during 15-minute exposures at indicated pH values in 30 per cent glycerol. All data shown have been corrected for non-enzymic hydrolysis. TABLE II ChE activity of fly head suspensions after 30 minutes exposure at various pH values pH Average enzymic activity (per cent) Number of observations pH Average enzymic activity (per cent) Number of observations 1 10 5 5 4 5 4 5 5 5 5 nil 2 All runs at degrees C.; , M; samples readjusted to pH for 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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