Eukaryotic ntawm tes thiab nws cov yam ntxwv thiab tej lub koom haum

eukaryotic cell kev kawm ntawv yog tus thib ob nyob rau hauv tseem ceeb (tom qab lub tsos ntawm lub neej nws tus kheej) ib evolutionary kev tshwm sim. Lub ntsiab thiab siv qhov sib txawv ntawm eukaryotes los ntawm prokaryotes yog muaj ib tug ntau zoo meej zog ntawm lub genome. Tsaug rau cov emergence thiab kev loj hlob ntawm ib tug cell nucleus, sharply nce degree ntawm adaptability ntawm unicellular kab mob mus rau lub tu ncua hloov tej yam kev mob thiab lub peev xwm los hloov sai sai tsis ua tej yam pauv loj hloov mus rau lub roj ntsha caj ces system.

Eukaryotic cell, lub cytoplasm ntawm uas yog ib thaj chaw ntawm active metabolic dab, zoo sib cais los ntawm lub chaw cia, cov nyeem thiab replication ntawm caj ces, twb tau mus ntxiv lom evolution. Qhov no yog ib thaj av thiab tseem ceeb heev evolutionary kev tshwm sim, raws li cov kws tshawb fawb, tshwm sim tsis pub dhau 2.6 billion xyoo dhau los, nyob hauv kev tshuam ntawm ob geological landmarks -. Archean thiab Proterozoic.

Qhov siab adjustability thiab stability ntawm lom lug yog ib tug yuavtsum tau kawm uantej rau tag nrho cov lom evolution. Nws yog lawv muaj peev xwm rau adaptation eukaryotic cell yuav evolve mus rau hauv multicellular kab mob nrog txoj ntxwv lub koom haum. Tseeb, nyob rau hauv multicellular lom systems, hlwb nrog tib genome, adapting rau hloov tej yam kev mob, tsim ib tug txawv kiag li, ob qho tib si nyob rau hauv lawv cov morphological zog, thiab functionality, fabrics. Yog zoo yeej ntawm evolution ntawm eukaryotes, uas tau coj mus rau lub rov tshwm sim ntawm xws li ib tug lossis loj ntau yam ntawm lub neej ntaub ntawv nyob rau hauv lub ntiaj chaw thiab tawm mus rau lub evolutionary arena ntawm tus txiv neej nws tus kheej.

Tus qauv ntawm lub hlwb ntawm ib tug eukaryotic hom muaj ob peb cim nta uas yog tsis yam ntxwv prokaryotes. Eukaryotic cell muaj ib tug loj npaum li cas ntawm kev tshuaj ntsuam genetic khoom (90%), uas yog feeb meej nyob rau hauv chromosomal lug uas saib kuas lawv ntau yam zoo thiab specialization. Tej eukaryotic cell yus muaj los ntawm ib tug nyias muaj nyias ib cov tub ntxhais. Qhov no yog lub ntsiab qhov txawv feature ntawm no hom ntawm lub hlwb. Ib qho tseem ceeb sib txawv los ntawm prokaryotes yog organelles ntawm eukaryotic hlwb - ib tug ntau yam ntawm mus tas li thiab intracellular lug.

Eukaryotic cell, muab piv nrog prokaryotic muaj ib tug complex multistage system ntawm kev xaav ntawm ntau yam tshuaj. Nyob rau hauv cov xwm muaj ib co raug universal eukaryotic cell hom. Tag nrho cov ntawm lawv yog yus muaj los ntawm ntau haiv neeg zoo kawg uas yog vim precisely rau qhov yuav tsum tau rau ib tug evolutionary adaptation. Ib tug heev ib qho tseem ceeb feature ntawm eukaryotes yog lawv xam qhovkev compartmentalisation - localization ntawm tag nrho cov biochemical dab nyob rau hauv ib tug neeg cellular compartments, sib cais los ntawm intracellular membrane. Eukaryotes muaj ntau txoj ntxwv Cheebtsam. Xws li daim nyias nyias system; cytoplasmic matrix, uas yog lub ntsiab intracellular tshuaj; cellular organelles - lub ntsiab Cheebtsam ntawm haumxeeb eukaryotes.