148 



THE METABOLISM OF ALGAE 



nitrate, 16, 68, 70-4, 90, iii, 117, 



124, 126, 129 

 nitrite, 74 

 nitrogen assimilation, 68-85, ^2, 



130, 131 

 • — fixation, 68-71, 90 

 nitrogen-deficient cells, 71, 75-8, 



81, 111-13, 116, 117, 119-23 

 Nitrosomonas, 16 

 Nttzschia, 13, 28, 32, 36, 55, 86, 98, 



99, 1 12-14, 120 

 Nostoc, 15, 32, 51, 69, 70, 78, 114 

 nucleic acid, 86, 103, no, 113, 116 



Ochromonas, 14, 50 



Oedogonium, 13, 99, 100 



organic substances, assimilation by 



algae, 50-67, 81-8, 131 

 ornithine, 78, 79 

 Oscillatoria, 12, 15, 28, 32, 49, 94, 



102, 122, 123 

 Oscillatoriaceae, 15, 69 

 oxaloacetate, 8, 9, 39, 43, 47, 65, 



66, 79 

 oxidative assimilation, 4, 63-7, in 

 oxyhydrogen reaction, 30, 48, 49 



palmitic acid, 98, 113 

 paramylum, 93, 104 

 pectin, 98, 104 



Pelvetia, 14, 92, 94, 102, 128, 129 

 pentose, 52, 64, 90, 92, 98 

 peptides, 102, 103 

 Peridinium, 14, 59, 75, 112 

 permeability, 33, 34, 54, 55, 71-3, 



89, 132 

 peroxidase, 1 1 



Phaeophyceae, 9, 11, 21, 23, 25, 

 32, 50, 92, 94-6, 98-100, 102, 

 104, 105, 119, 123-9, 130. 133 

 Phaeophyta, 14 

 o-phenanthroline, 31 

 phenylalanine, 44, 85, loi 

 Phormidium, 15, 69, loi, 102 

 phosphate deficient cells, 113 

 phosphoglyceraldehyde, 7,11 

 phosphoglyceric acid, 6, 7, 11, 37- 



43, 51. 59, 64 

 phosphorylation, 6, 11, 44, 56, 64, 



66, 79, 96 

 photolithotrophy, 15, 33 

 photo-organotrophy, 15, 33 

 photoreduction, 30, 32, 49 

 photosynthesis, i, 2, 4, 5, 10, 12, 



17-47, 57-61, 71, 73, 108, 



119-21, 130, 132, 133 



photosynthesis, acceptor in carbon 

 dioxide fixation, 38-40, 43, 44 

 action spectra, 22, 23, 25—7 

 dark reactions, 18, 36-41 

 hydrogen donors, 15, 17, 18, 30- 



3, 130, 131 

 inhibitors, 32, 41, 120 

 light absorption, 17, 22-30, 131 

 oxygen evolution, 17, 22, 31, 32, 



39, 58, 72, 73 

 photochemical reaction, 15, 18, 

 28, 31, 39-41, 44, 60, 61, 73, 



74, 131 

 products, 17, 18, 36-47, 73, 79, 



113, 119-23, 127, 132 

 quantum efficiency, 17, 22, 24, 



25, 27, 31, 120 

 rate, 35, 108, in, 114, 119, 120, 



124, 126, 129 

 photosynthetic bacteria, 15, 18, 



30, 68 



— pigments, 2, 10, 17-30, 48, 50, 



61-3, 99, 103, 105, 109, 130, 



133 



— quotient, 17, 72, 73, 111-13, 



120, 121 

 phototrophy, 15, 17-47, 57-^1, 



70, 71, 74, 86 

 — , obligate, 54, 59-61, 85, 132 

 phycobilins, 19, 20, 22, 26—9 

 phycocyanin, 20—2, 27 

 phycoerythrin, 20-2, 27 

 Pinmdaria, 13, 32, 112 

 polypeptides, 90, 102 

 polyphenol oxidase, 1 1 

 polysaccharides, 67, 77, 78, 80, 



93-8, 104, 133 

 Polytoma, 13, 62, 85 

 Polytomella, 10, 12, 13, 56, 62, 85, 



93, 103, no, 113, 116 

 Porphyra, 10, 14, 27, 28, 32 

 Porphyridium, 14, 28, 32 

 proline, loi 

 propionic acid, 63 

 Prorocentrum, 14, 59, 75 

 protein, 101-3, 106, 109-n, 113, 



115, 116, 118, 120, 121, 124- 



7, 131 



— synthesis, 36, 43, 44, 47, 67, 



73, 81, no, 113, 115, 120 

 proteinase, 55 

 Prototheca, 4, 6, 9, 13, 16, 51, 54, 



55, 60, 62, 63, 65, 66, 86 

 pyranose structure, 91 

 pyrimidine, 85, 86 



