منابع مشابه
Photomovement in plants and microorganisms: old and new questions
Photomovement, taken in its broader sense, comprises the responses of motile organisms, intracellular movement, phototropic curvature, and photonastic movement. These re sponses can be scalar or vectorial with respect to the light direction. For classifying scien tific questions, a schematic sequence can be defined, viz. perception signal transduction terminal response. In this paper, the pre...
متن کاملNumber fluctuation spectroscopy of motile microorganisms.
A random-walk model of motility is used to predict the dynamics of fluctuations in the number of particles in a small observation volume. The results show that number fluctuations provide a measure of the mean swimming speed as well as the persistence length. Experimental light-scattering results are presented for three strains of Escherichia coli whose motion appears random-walk in nature. For...
متن کاملOn-chip continuous monitoring of motile microorganisms on an ePetri platform.
Self-imaging Petri dish platforms with microscopy resolution, which we term 'ePetri', can significantly streamline cell cultures and/or other longitudinal biological studies. In this paper, we demonstrate high-resolution imaging and long-term culture of motile microorganisms in a specialized ePetri platform by taking advantage of the inherent motion. By applying a super-resolution algorithm to ...
متن کاملMotile Behavior of Bacteria
© 2000 American Institute of Physics, S-0031-9228-0001-010-3 E coli is a singlecelled organism that lives in your gut. It is equipped with a set of rotary motors only 45 nm in diameter. Each motor drives a long, thin, helical filament that extends several cell body lengths out into the external medium. The assemblage of motor and filament is called a flagellum. The concerted motion of several f...
متن کاملElectrophoresis of motile bacteria.
For over 30 years the technique of microelectrophoresis has been used to study the surface properties of bacteria and other particles of microscopic size. Since flagella undoubtedly act as cellular surface components, they would be expected to contribute to the electrophoretic behavior of the cells. Likewise, vital motion might be expected to complicate electrophoretic measurements of flagellat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photochemistry and Photobiology
سال: 1979
ISSN: 0031-8655,1751-1097
DOI: 10.1111/j.1751-1097.1979.tb07072.x