Prozesse-Einzeller-Wahrnehmung

Phototaxis

Wikipedia-de: Phototaxis Als Phototaxis wird eine durch Unterschiede der Beleuchtungsstärke (Beleuchtungsstärkengradient) in ihrer Richtung beeinflusste Fortbewegung von Organismen bezeichnet. Positive Phototaxis bezeichnet die Bewegung in Richtung höherer Beleuchtungsstärke, negative Phototaxis die Bewegung in Richtung niedrigerer Beleuchtungsstärke. Bei einer amphitropen Phototaxis bewegen sich einige Organismen einer Gruppe von gleichartigen Organismen… Mehr

Graviperzeption

Wikipedia-de: Statocyt Researchgate: Graviperzeption Einzellige Flagellaten, wie die photosynthetisch aktive Euglena gracilis, orientieren sich sehr präzise am Schwerefeld der Erde. Raumfahrtexperimente belegen, dass die Reizschwelle bei 12 % der Erdschwerkraft liegt. Intrazelluläre sedimentierende Statolithen sind nicht für die Graviperzeption verantwortlich; stattdessen drückt der gesamte Zellkörper, der schwerer ist als das… Mehr

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Prozesse-Einzeller-Wahrnehmung

Phototaxis

Graviperzeption

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