CONTENTS xi 



Metabolism of nitrogen compounds 223 

 Metabolism of lipides 229 



10 Seed germinotion 233 



Cliemical composition of seeds 23,^ 

 Effect of environment on seed germination 234 

 Pliysiological factors in seed germination 236 

 Metabolism of germinating seeds 238 



] ] Piant nufrition 242 



Essential nutrients 242 

 Mineral elements 243 

 Role of the soil 249 

 Fertilizers 263 



12 Growth reguloiion 276 



Environmental factors influencing growth 276 

 Plant hormones and regulators 280 



ANIMAL BIOCHEMISTRY 



part 3 



13 Body tissues 291 



Blood and lymph 291 

 Supporting tissues 299 

 Muscle tissue 301 

 Nervous tissue 305 

 Reserve tissues 310 

 Glandular tissues 311 

 Milk 324 



14 Vitamins 326 



Thiamine 329 

 Riboflavin 333 

 Nicotinamide 337 

 Vitamin Bg 340 

 Pantothenic acid 342 



