Video: Puas tsuas yog eukaryotic hlwb muaj lub nucleus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Eukaryotic hlwb muaj membrane-bound organelles, thaum prokaryotic cell ua tsis yog. Eukaryotic hlwb muaj cov nucleus uas muaj cov ntaub ntawv genetic hu ua DNA, thaum prokaryotic cell ua tsis yog. Hauv prokaryotic hlwb , DNA tsuas yog ntab ib ncig ntawm lub cell.
Khaws qhov no hauv kev xav, cov hlwb eukaryotic uas tsis muaj lub nucleus?
Muaj ntau qhov sib txawv ntawm ob, tab sis qhov sib txawv loj tshaj plaws ntawm lawv yog qhov ntawd eukaryotic hlwb muaj ib qhov txawv nucleus muaj cov cell cov genetic khoom, thaum prokaryotic cov hlwb tsis muaj nucleus thiab muaj dawb-floating genetic khoom hloov.
Tom qab ntawd, lo lus nug yog, puas hlwb prokaryotic muaj ib tug nucleus? Kev faib nruab nrab prokaryotes thiab eukaryotes feem ntau suav hais tias yog qhov tseem ceeb tshaj plaws los yog qhov sib txawv ntawm cov kab mob. Qhov txawv yog tias eukaryotic hlwb muaj ib "true" nucleus muaj lawv DNA, hos prokaryotic cell ua tsis yog muaj nucleus . Prokaryotes tsis muaj mitochondria thiab chloroplasts.
Muaj pes tsawg nuclei ua eukaryotic hlwb?
Eukaryotic hlwb muaj muaj ntau tshaj ib nucleus rau cell . Xws li hlwb hu ua multinucleate lossis polynuclear hlwb.
Vim li cas cov hlwb prokaryotic tsis muaj nucleus?
Muaj tsis muaj muaj tseeb nucleus muaj nws tus kheej zoo. Prokaryotes tuaj yeem nqa cov khoom siv caj ces (plasmids, thiab lwm yam) los ntawm lawv qhov chaw nyob ib puag ncig thiab dhau los ua cov chaw tsim khoom lag luam protein los ntawm txhua txoj cai caj ces muab tso rau hauv lawv, muab cov khoom siv raw (amino acids) muaj.
Pom zoo:
Dab tsi yog pom hauv eukaryotic hlwb tab sis tsis yog cov hlwb prokaryotic?
Eukaryotic hlwb muaj cov kab mob sib txuas ua ke, xws li cov nucleus, thaum cov hlwb prokaryotic tsis ua. Qhov sib txawv hauv cellular qauv ntawm prokaryotes thiab eukaryotes muaj xws li muaj mitochondria thiab chloroplasts, phab ntsa cell, thiab cov qauv ntawm chromosomal DNA
Puas yog eukaryotic hlwb puas muaj cov cell membrane?
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 uas muaj kab mob (xws li endoplasmic reticulum, Golgi apparatus, chloroplasts, thiab mitochondria)
Dab tsi yog lub cev uas nws cov hlwb muaj lub nucleus?
Eukaryotes. Eukaryotes yog cov kab mob uas lawv cov hlwb muaj cov nucleus thiab lwm cov kab mob sib txuas nrog cov kab mob. Muaj ntau hom kab mob eukaryotic, suav nrog txhua yam tsiaj, nroj tsuag, fungi, thiab protists, nrog rau feem ntau algae. Eukaryotes tuaj yeem yog ib leeg-celled lossis multicellular
Puas yog eukaryotic hlwb puas muaj cytoskeleton?
Lub cytoskeleton ib zaug xav tias yog ib qho tshwj xeeb ntawm eukaryotic hlwb, tab sis homologues rau tag nrho cov proteins loj ntawm eukaryotic cytoskeleton tau pom nyob rau hauv prokaryotes. Txawm li cas los xij, qee cov qauv hauv cov kab mob cytoskeleton tej zaum yuav tsis tau txheeb xyuas txog tam sim no
Leej twg biologist tau qhia lub sij hawm prokaryote nyob rau hauv 1937 kom paub qhov txawv hlwb uas tsis muaj nucleus los ntawm nucleated hlwb ntawm cov nroj tsuag thiab tsiaj txhu?
Prokaryote / Eukaryote nomenclature tau thov los ntawm Chatton hauv 1937 los faib cov kab mob nyob rau hauv ob pawg loj: prokaryotes (cov kab mob) thiab eukaryotes (cov kab mob uas muaj cov cell nucleated). Tau txais los ntawm Stanier thiab van Neil qhov kev faib tawm no tau lees paub thoob ntiaj teb los ntawm cov kws tshawb fawb txog biologist txog tam sim no (21)