302 



Cytochrome (b), 104, 105, 107-109, 



111, 126 

 Cytochrome b(d), 103-107, 114 

 Cytochrome c, 102-106, 108, 109, 



111, 114, 116, 117, 119, 121 

 turnover number, 112 



Damon Runyan Memorial Fund, 



130 

 Davis, G. K., 70 

 de Groot, B., 48 

 Deoxyribonucleic acid, 28 

 Department of Biomolecular Struc- 

 ture, Leeds University, 249 

 Difference spectra, 101, 102, 106, 



109, 114 

 Diffusion 



coefficient, 140-142 

 nutrient, 139 

 nutrient rate, 144 

 spherical sink, 139 

 steady state, 139, 141, 142 

 theory, 139 

 Diluent, 32, 100 



calcium effect, 75, 290 

 freezing point depression, 65 

 yolk-citrate buffer, 32 

 2,4-Dinitrophenol, 59, 89, 90 

 azide reduction of cytochromes, 



effect on. 1 17 

 crossover point, 119, 121 

 inhibition of pyruvate metabo- 

 lism, 89, 91 

 inhibition of sperm motility, 126 



129 

 lactate accumulation, effect on 



90 

 stimulation of respiration, 89 



124, 126, 129 

 uncoupling agent, 119, 121, 126 

 129 

 Dithionite 



absorption spectrum, effect on 

 103, 104, 106 

 DNA, see Deoxyribonucleic acid 



DNP, see 2 J-Dinitrophenol 



Dog sperm 



respiratory enzymes, 100, 105— 

 107, 109, 111-113, 115, 121, 

 123, 124, 126-129 

 Z 02 value, 112 



Donnan ratio, 56 



Dott, H. M., 60 



Dunham Lecture, Harvard Univer- 

 sity, 17 



Dunham, P. B., 55, 286, 287, 288 



Ecology 



adaptation to external environ- 

 ment, 99, 129, 195, 288-289 

 adaptation to internal environ- 

 ment, 59, 76, 288-289 

 genetic variability of sperm, 



291 

 phosphagen distribution, 288- 



289 

 physiological variability of 

 sperm, 291 

 EDTA, see Ethylene diaminetetra- 



acetate 

 Efficiency 



energy conversion, 271, 272 

 motile machinery, 145 

 selective value, 146 

 Eijhout, P., 53 

 Ejaculate 



ionic balance in relation to 



sperm motility, 57 

 sperm number, bovine, 100 

 sperm source, 31, 62 

 volume, human, 93 

 Electron microscopy, 15, 23, 27, 148, 

 152, 155, 157, 159, 161, 165, 

 171, 173, 182, 189, 194, 205, 

 213, 219, 227, 248, 286, 287 

 Electronic motility recording, 40-46 

 Elongation 



elastic rod analogy, 8 

 flagellar gel, 210 



