ENERGY SUPPLY OF THE CELL 



117 



Table 19. 



•Influence of Sugar Concentration upon the Rate of 

 Alcoholic Fermentation 



There is a certain degree of proportionality between 

 the rate of fermentation and the sugar concentration 



at ai atm. /tressurt 



o.ai.% ofiS% ajt Q/5%A/aA/0a. 



Fig. 12. — Influence of the con- 

 centration of oxygen upon the rate 

 of oxidation of Nitrosomonas. 



Fig. 13. — Influence of the concen- 

 tration of nitrite upon the rate of 

 oxidation of Nitrobacter. 



when the concentration is low. Above 1.5%, the rate 

 is constant and it decreases very slowly when the con- 

 centration goes above 5%. ^ 



Very nearly the same result was obtained by Meyerhof 

 (1917) with a culture of Nitrosomonas by varying the 

 oxygen concentration. The rate of oxidation was con- 

 stant above 0.5 atmospheres of air pressure while below 



