Actinotaxis
Definition
A particular form of taxis consisting of the characteristic property of certain lower organisms, motile cells, or microorganisms to perform orientation, attraction, or repulsion movements under the direct influence of luminous or other types of electromagnetic radiation emitted by an external source. This structural mechanism guides biological behavior based on the vectors and intensity of the radiant flux.
Bilingual Equivalents
- Actinotaxis
- Radiotaxis
Grammatical & Source Details
| Inflection Type | Neuter noun, regular variations with standard plural endings. |
| Formation | Learned compound formed from the prefix 'actino-' (radiation) and the noun 'taxis' (movement). |
| Spelling / Pronunciation | [ak.ti.no.tak.ˈtism] |
| Source | Encyclopedia of Cellular Biology and Biophysics |
Contextual Usage Examples
RO: Cercetătorii au observat un actinotactism pozitiv în rândul coloniilor de alge expuse la radiații ultraviolete controlate.
EN: The researchers observed a positive actinotaxis among algae colonies exposed to controlled ultraviolet radiation.
RO: Fenomenul de actinotactism poate fi modificat drastic dacă se schimbă lungimea de undă a sursei luminoase din laborator.
EN: The phenomenon of actinotaxis can be drastically altered if the wavelength of the laboratory light source is changed.
RO: Studiul genetic a demonstrat că acest actinotactism specific este reglat de o proteină sensibilă la spectrul solar.
EN: The genetic study demonstrated that this specific actinotaxis is regulated by a protein sensitive to the solar spectrum.
Idioms & Phrases
Actinotactism pozitiv / Positive actinotaxis
RO: Mișcare de deplasare automată a microorganismelor direct către sursa generatoare de radiații energetice.
EN: Automatic displacement movement of microorganisms directly toward the source generating energetic radiation.
Actinotactism negativ / Negative actinotaxis
RO: Reacție biologică de respingere, prin care celulele mobile se îndepărtează de o sursă de radiații nocive.
EN: A biological rejection reaction, through which motile cells move away from a harmful radiation source.
Mecanism de actinotactism / Actinotaxis mechanism
RO: Ansamblu de procese biochimice interne care transformă stimulul fizic radiant într-o reacție de orientare spațială.
EN: A set of internal biochemical processes that transform the physical radiant stimulus into a spatial orientation reaction.
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