Puas yog microbial eukaryotes monophyletic?
Puas yog microbial eukaryotes monophyletic?

Video: Puas yog microbial eukaryotes monophyletic?

Video: Puas yog microbial eukaryotes monophyletic?
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Anonim

Biologists kuj yuav luag paub tseeb tias eukaryotes evolved ib zaug xwb (piv txwv li, yog monophyletic - cov xeeb leej xeeb ntxwv ntawm ib tug poj koob yawm txwv) vim lawv txhua tus sib koom: 1. microtubules (muaj cov protein tubulin) thiab actin molecules-

Tsuas yog li ntawd, lub tswv yim twg rau lub hauv paus chiv keeb ntawm eukaryotes?

Endosymbiosis. Lub endosymbiotic txoj kev xav hais tias eukaryotes yog ib yam khoom ntawm ib tug prokaryotic cell engulfing lwm tus, ib tug nyob rau hauv lwm tus, thiab evolving ua ke nyob rau hauv lub sij hawm mus txog rau thaum lub cais hlwb twb tsis pom zoo li ntawd.

Dab tsi ntawm cov kab mob hauv qab no yog eukaryotic? Cov kab mob thiab Archaea tsuas yog prokaryotes. Kab mob nrog eukaryotic tshuaj hlwb hu ua eukaryotes . Tsiaj txhu, nroj tsuag, fungi, thiab protists yog eukaryotes . Tag nrho cov multicellular Cov kab mob yog eukaryotes.

Xav txog qhov no, cov kauj ruam twg yog qhov tseem ceeb hauv kev hloov pauv ntawm eukaryotic hlwb?

Mitochondria thiab chloroplasts pib los ntawm endosymbiotic koom haum ntawm aerobic (ntau dua) Ib kauj ruam tseem ceeb hauv kev hloov pauv ntawm cov hlwb eukaryotic yog qhov tau txais cov membrane-pob subcellular organelles, tso cai rau kev loj hlob ntawm complexity yam ntxwv ntawm cov hlwb.

Cov qauv dab tsi txawv eukaryotes los ntawm prokaryotes?

Eukaryotic hlwb muaj daim nyias nyias - khi organelles , zoo li cov nucleus , thaum prokaryotic hlwb tsis txhob. Qhov sib txawv hauv cellular qauv ntawm prokaryotes thiab eukaryotes muaj xws li muaj mitochondria thiab chloroplasts, cell phab ntsa, thiab cov qauv ntawm chromosomal DNA.

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