Does Paramecium sense gravity? Mechanisms of the gravitactic behaviour of Paramecium.
نویسندگان
چکیده
منابع مشابه
possible molecular mechanisms for paramecium learning
learning is a cornerstone of intelligent behavior in animals. this behavior has been mostly studied in organisms with a fairly complex nervous system. however, recent reports of learning in unicellular organisms suggested the existence of associative learning in unicellular organisms. in particular, the capability to associate different light intensities with cathodal stimulation in paramecium ...
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Prolonged exposure to KCl has long been recognized to modify swimming behaviour in Paramecium tetraurelia, a phenomenon known as 'adaptation'. In this study, we have investigated behavioural adaptation systematically. A 24 h exposure to 30 mmol l-1 KCl deprived cells of the ability to respond behaviourally to two established chemoeffectors. We also explored the effects of 30 mmol l-1 KCl on the...
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The effect of industrial sludge toxicity on the cell growth of a green paramecium, Paramecium bursaria was examined. P. bursaria cells were cultured in a lettuce medium supplemented with various concentrations of sludge suspension at 23 °C under LD (ligh and dark cycle) condition. Results suggested that P. bursaria proliferates normally even at 1.5% sludge suspension. However, 1.5x10 % sludge s...
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The endosymbionts of Paramecium aurelia appear to consist of a number of different Gramnegative bacteria which have come to live within many strains of paramecia. It is not known whether in nature this relationship is mutually beneficial or not. The symbionts from one paramecium may kill other paramecia lacking that kind of symbiont. We identify the following classes of endosymbiotic organisms....
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The scanning electron microscope (SEM) provides an ideal system for studying the three-dimensional surface structure of biological materials . Our previous work on the protozoan Opalina showed that instantaneous fixation, combined with critical point drying, faithfully preserved the pattern of ciliary coordination and the form of ciliary beat for scanning electron microscopy (1, 2) . I report h...
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ژورنال
عنوان ژورنال: Biological Sciences in Space
سال: 1995
ISSN: 0914-9201,1349-967X
DOI: 10.2187/bss.9.17