INDEX 



211 



Pathogenicity, 186-96 



Pathogens, 20, 110, 115, 186 



PeniciUin, 12, 198-9 



Penicillium, 95, 97, 198 



Pepsin, 51 



Peptidase, 50 



Peptidases, 50-1, 157 



Peptide, ^-amino-benzoic acid, 113 



PermeabiUty, 29, 62, 79 



Peroxidase, 34 



^H effect on enzymes, 71-4, 159, 

 163 



• — growth limits, 71 



Phagocytosis, 186 



Phases, growth, 75 



Phenylalanine, 51, 161, 166 



Phosphatase, 34, 83 



Phosphocholine, 194 



Phosphoclastic split, 132 



Phosphoglyceric acid, 39, 125-7, 

 128-31, 133, 141 



Phosphoglyceromutase, 126-7 



Phosphohexokinase, 125, 127 



Phosphohexose-isomerase, 125, 126 



Phosphopyruvic acid, 55, 128-9 



Phosphorylation, 6, 32, 55-6, 

 129-31 



Photosynthetic autotrophes, 85-7 



Physico-chemical growth con- 

 ditions, 70-5 



Pigments, 45, 86 



Pimehc acid, 89, 104 



Plating, 12 



Pneumococcus, capsules, 60-1, 95, 

 120, 188 



— hydrogen peroxide sensitivity, 



46 



— Type interchange, 61 

 Polar groups, 36, 37, 54, 167 

 Polymyxin, 200 

 Polyphenol oxidase, 34, 83 

 Polysaccharides, 49, 50, 60, 68, 



119-21, 188 

 Positional isomerism, 2-3 

 Potential activity, 72-4 

 Pressor drugs, 169 

 Proflavin, 203 

 ProHne, 166, 174 



Propionibacteria, 7, 107, 134, 138-9 

 Propionic acid, 7, 87, 138-9 

 Propyl alcohol, 123, 145 



Prosthetic groups, 31-5 

 Proteases, 25, 49-51, 79, 157 

 Protective mechanisms, 72-3 

 Protein breakdown, 67, 157-8 

 Proteins, 3, 49, 82, 93, 99, 157-8, 



181 

 Proteus fluorescens liquefacienSf 164 



— morganii, 108 



— vulgaris, 20, 195 



amino-acid decarboxylases, 



180 



— oxidase, 43, 161 



colony form, 13 



— — growth requirements, 1 00, 



108, 111 



identification, 22 



Pseudomonas, 95, 138, 158, 181 



— pyocyanea, 19, 45, 161 

 Purines, 80, 105 



Purple sulphur bacteria, 86 

 Putrescine, 168, 169, 174 

 Pyocyanine, 19, 45 

 Pyridine-3-sulphonic acid, 114, 116 

 Pyridoxal, 89, 101-3, 109 



— phosphate, 33, 54, 95, 103, 169 

 Pyridoxamine phosphate, 33 

 Pyridoxin, 89, 94, 101-3, 112 

 Pyrithiamin, 115, 116 

 Pyrophosphatase, 83 

 Pyrophosphate bond, 130 

 Pyruvic acid, carboxylase, 53, 128, 



140 

 fermentation by Aerobacter, 



136-8 



Esch. coli, 131-6 



Propionibacteria, 138-9 



formation from glucose, 



124-9 

 metabohsm, general, 98, 101, 



104, 123, 153 



oxidase, 55, 151 



transamination, 93-5 



RACEMASE, 95 



Rate of multiphcation, 8, 75, 106 



Reaction chains, 26, 27, 97 



Reduction, 38 



— deamination, 162 



Respiratory activities, 2 



Reticulo-endothelial system, 186-9 



