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Tarkibi makhsusi khimiyavi

Dar tarkibi organizmhoi zinda hamon elementhoero didan mumkin ast, ki onho dar tabiati gayrizinda niz vomekhurand. Bo vujudi on, tanosubi elementho dar tabiati zinda va gayrizinda yak khel nest.

himsostav-10Elementhoi tarkibi ashyohoi gayrizinda, asosan az oksigen, silitsiy, ohan, magniy, alyuminiy va gayraho iboratand. Taqriban 98 foizi tarkibi organizmhoi zinda boshad, az chahor element – karbon, oksigen, nitrogen va hidrogen iborat ast. Onho dar jismi organizmhoi zinda dar shakli molekulahoi murakkabi organiki vujud dorand. Pahnshavii onho dar tabiati gayrizinda miqdoran va sifatan farq mekunad. Beshtarin molekulahoi organikii muhiti beruna mahsuli faoliyati hayotii organizmhoi zinda meboshand.

Dar organizmhoi zinda chand guruhi asosii molekulahoi organiki mavjudand. Onho vazifahoi makhsus doshta, aksariyatashon polimerhoi tanzimkunanda meboshand. Dar joi avval kislotahoi nukleinat – KDN va KRN qaror dorand.

Onho qobili az nasl ba nasl guzaronidani alomatu khususiyathoi organizm buda, dar ravandi tagyirpaziri shirkat mevarzand. Kislotahoi nukleinat metavonand khud az khud hosil shavand. Joi duyumro safedaho megirand. Onho sokhtori asosii organizmi zinda yo biokatalizator meboshand. Dar joi savvum angishtobho va charbhoyand, ki qismi tarkibii membranai biologi va devori hujayraro tashkil doda, manbai asosii energiya va faoliyati hayotii organizmhoi zinda

meboshand. Dar okhir, dar joi chahorum guruhi kalon va gunogunshakli «molekulahoi khurd» meistand, ki dar ravandi mubodilai moddahoi organizmhoi zinda ishtirok menamoyand.

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