K Dose (15 results)

Hardcover. Condition: Very Good. Text is unmarked; pages are bright, though the page edges are foxed. Binding is tight and square. Covers have a couple small stains on them. Book has a slightly musty smell. No dust jacket. Overseas/Priority shipping at cost. 845pp.

Broschiert. Condition: Gut. 191 Seiten; 114 Abb.; 10 Tab. ; Das hier angebotene Buch stammt aus einer teilaufgelösten wissenschaftlichen Bibliothek und trägt die entsprechenden Kennzeichnungen (Rückenschild, Instituts-Stempel.); leichte altersbedingte Anbräunung des Papiers; der Buchzustand ist ansonsten ordentlich und dem Alter entsprechend gut. Sprache: Deutsch Gewicht in Gramm: 360.…

Condition: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Condition: New.

Condition: New. In.

Paperback. Condition: Brand New. reprint edition. 121 pages. 9.45x6.69x0.47 inches. In Stock.

Condition: New. pp. 488.

Condition: New.

Taschenbuch. Condition: Neu. Neuware - The primary metabolism of protobionts was probably based on the electron transfer reactions regulated by catalysts or photo sensitizing pigments. The action of photoreceptive pigments was inevitable in the case of electron transfer leading to light energy storage in the reaction products. The primitive tetrapyrrolic pig ments formed abiogenically (porphin, chlorin) as well as their more complicated biogenic analogs (chlorophylls) are capable of photo sensitizing electron transfer in systems, having various degrees of molecular complexity. The inorganic photosensitizers (titanium dioxide. zinc oxide. etc.). being excited in the near ultraviolet. are able to perform the same reactions as porphyrins--electron transfer from donor to acceptor molecule (including photoreduction of viologens) or water molecule photooxidation (oxygen liberation). coupled with reduction of ferric compounds and quinones. The in organic photosensitizers are not used in biological evolution; actually the inorganic ions entered into tetrapyrrolic cycle. form ing effective photocatalysts. Inclusion of pigments into primary membranes led to elaborated coupling between pigments and enzymatic systems. The involvement of the excited pigments into the biocata lytic electron transfer chain was prerequisite to effective func tion of photosynthetic organisms. REFERENCES 1. Oparin. A. I., 'Origin of Life on Earth,' Izd. AN SSSR. Moscow. 1957. 2. Gaffron, H., in: 'Horizons in Biochemistry' (Kasha. M and Pullmann, B eds.), p. 59. Academic Press, New York. 1962. 3. Calvin. M 'Chemical Evolution,' C1arendon Press, Oxford. 1969. 4. Pasynsky. A. G . and Pav1ovskaya. T. E . Uspekhii khimii 33, 1198 (1964).…

Paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

335 S. Br. Sprache: Deutsch.

Paperback. Condition: Brand New. 324 pages. German language. 9.61x6.69x0.74 inches. In Stock.

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Translocation Along Microtubules in Insect Ovaries.- A. Introduction.- B. Insect Ovaries, Their Morphology and Development.- C. Translocation of Materials Between Nutritive Cells and Oocytes.- D. Ultrastructure of Nutritive Tubes.- E. Mechanisms of Microtub.…

Condition: New. Print on Demand pp. 488 66:B&W 7 x 10 in or 254 x 178 mm Perfect Bound on White w/Gloss Lam.

Condition: New. PRINT ON DEMAND pp. 488.