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biologia everything

QuestionAnswer
ärsyke tekijä joka kynnysarvon ylittyessä aiheuttaa tietyn reaktion (vasteen)
hormoni elimistön tuottama viestiaine, joka leviää verenkierron mukana kohde-elimeensä ja vaikuttaa spesifisti reseptorin välityksellä jo pieninä pitoisuuksina kohdesolunsa toimintaan
palautesäätely yp homeostasiaa ja varmistaa että hormoneja eritetään vain tarpeeseen ja tarvittavan kauan. Hormoni vaikuttaa itse omaan eritykseensä.
kemosynteesi yhteyttäminen ilman auringonvaloa. Sidottava energia peräisin yhdisteiden hapettamisesta. Muodostuu hiilari
DNA kaksijuosteinen rihma, jonka tehtävänä on säilyttää perinnöllinen informaatio ja kopioida se uusia soluja varten.
Created by: santsa
 

 



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