Video: Puas yog microbial eukaryotes monophyletic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Nyob rau hauv hom cell prokaryotes los yog eukaryotes puas cell voj voog tshwm sim Vim li cas?
Cell Cycle and Mitosis (hloov 2015) LUB CELL CYCLE Lub voj voog ntawm tes, lossis lub voj voog ntawm tes faib, yog cov xwm txheej uas tshwm sim hauv lub cell eukaryotic ntawm nws qhov tsim thiab lub sijhawm nws rov ua dua nws tus kheej
Puas yog kev tswj cov noob hauv eukaryotes koom nrog operons?
Xws li ib pawg ntawm cov noob hauv kev tswj hwm ntawm ib tus neeg txhawb nqa yog hu ua operon. Operons muaj nyob rau hauv cov kab mob, tab sis lawv tsis tshua muaj nyob rau hauv eukaryotes xws li tib neeg. Hloov chaw, nws kuj suav nrog tus txhawb nqa thiab lwm yam kev tswj hwm uas tswj hwm kev qhia ntawm cov noob
Puas yog prokaryotes thiab eukaryotes muaj sib xws?
Prokaryotic hlwb tsis muaj cov nucleus. Ob leeg prokaryotic thiab eukaryotic hlwb muaj cov qauv sib xws. Tag nrho cov cell muaj plasma membrane, ribosomes, cytoplasm, thiab DNA. Lub plasma membrane, lossis cell membrane, yog txheej phospholipid uas nyob ib puag ncig ntawm tes thiab tiv thaiv nws los ntawm ib puag ncig sab nraud
Puas yog microbial eukaryotes Autotrophs?
Eukaryotic Autotrophs: Nroj tsuag thiab Protists Tsiaj thiab fungi yog heterotrophs; lawv haus lwm yam kab mob los yog cov khoom siv organic los muab lawv lub zog uas lawv xav tau. Qee cov kab mob, archaea thiab protists kuj yog heterotrophs. Cov nroj tsuag hu ua autotrophs vim lawv ua lawv tus kheej cov zaub mov
Puas yog eukaryotes muaj cov kab mob sib khi ua ke?
Zoo li prokaryotic cell, eukaryotic cell muaj plasma membrane, cytoplasm, thiab ribosomes. Txawm li cas los xij, tsis zoo li cov hlwb prokaryotic, cov hlwb eukaryotic muaj: cov membrane-bound nucleus. Muaj ntau cov kab mob sib txuas ua ke (xws li endoplasmic reticulum, Golgi apparatus, chloroplasts, thiab mitochondria)