仲裁者
发表于 2025-3-28 17:25:07
Chemical Signal Transmission by Gamete Attractants in Brown AlgaeI wish to present a system that might be useful in studying chemotaxis and transmission of chemical signals. It is the occurrence and action of highly specific, volatile and very lipophilic hydrocarbon sex attractants formed by the unicellular female gametes of some seaweeds to attract the unicellular motile males for conjugation .
Nonconformist
发表于 2025-3-28 18:47:35
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ELATE
发表于 2025-3-29 01:35:23
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Infiltrate
发表于 2025-3-29 05:32:52
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有角
发表于 2025-3-29 07:15:12
Alexander Poppe,Norbert Stabenowsed of a protein, opsin, to which the 11-. isomer of retinal (retinaldehyde, vitamin A aldehyde) is attached as chromophore. In cattle and squid rhodopsin, the two visual pigments whose chemical composition has been examined most thoroughly, retinaldehyde forms a Schiff base (an aldimine) with the .
ablate
发表于 2025-3-29 13:38:02
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字的误用
发表于 2025-3-29 17:27:26
Uwe Rieken,Volker Braunberger,Oliver Drägeres of the cell membrane to the different ions. The membrane potentials are diffusion potentials. The light stimulus induces a transient change in permeability (conductivity) of the cell membrane which causes a voltage signal — the receptor potential. The ions are believed to pass the cell membrane .
Cpr951
发表于 2025-3-29 21:39:30
Kostentransparenz in der Supply Chainy bacteria has been recognized since the end of the 19th century, thanks to the pioneering work of ., ., and other biologists, the mechanisms involved are still almost entirely unknown. How do bacteria detect the attractants ? How is this sensed information translated into action; that is, how are t
悄悄移动
发表于 2025-3-30 00:22:25
Kostentransparenz in der Supply Chainin, das Land zu besuchen, in dem ., ., ., . und viele andere legendäre Persönlichkeiten der Biochemie ihre Laboratorien hatten. Und es ist insbesondere stimulierend, da die gegenwärtigen Beiträge Deutschlands zur Biochemie diese gute, feine Tradition fortsetzen.
flamboyant
发表于 2025-3-30 05:51:27
neue betriebswirtschaftliche forschung (nbf)f galactose transport in this organism is complicated by the existence of at least six transport systems with specificity for galactose (., 1971; . et al., 1968). This overlap made the design of selection procedures needed to obtain well defined mutants rather complex. Since no well characterized mu