DNA hauv prokaryotes muaj nyob hauv thaj chaw nruab nrab ntawm lub xovtooj hu ua nucleoid nucleoid Lub nucleoid (lub ntsiab lus nucleus zoo li) yog thaj tsam tsis xwm yeem nyob rau hauv lub cell prokaryotic uas muaj tag nrho lossis feem ntau ntawm cov khoom siv caj ces. … Nyob rau hauv sib piv rau lub nucleus ntawm ib tug eukaryotic cell, nws tsis yog surrounded los ntawm ib tug nuclear membrane. https://en.wikipedia.org › wiki › Nucleoid
Nucleoid - Wikipedia
, uas tsis nyob ib puag ncig los ntawm cov kab hluav taws xob nuclear. Ntau tus prokaryotes tseem nqa me me, ncig DNA molecules hu ua plasmids, uas txawv ntawm chromosomal DNA thiab tuaj yeem muab cov txiaj ntsig zoo hauv cov cheeb tsam tshwj xeeb.
Puas noob muaj nyob hauv prokaryotes?
Cov noob tau teeb tsa ua ke hauv pawg hu ua lac operon Lub koom haum ntawm prokaryotic DNA yog li txawv ntawm cov eukaryotes hauv ntau txoj hauv kev tseem ceeb. Qhov sib txawv tseem ceeb tshaj plaws yog cov txheej txheem condensation uas prokaryotic DNA molecules tau nkag mus kom haum rau hauv cov hlwb me me.
Cov noob nyob qhov twg hauv cov kab mob?
Cov kab mob kab mob nyob nyob rau hauv lub cytoplasm ntawm ib tug supercoiled chromosomenrog rau ntawm extrachromosomal plasmids.
Cov khoom siv caj ces nyob qhov twg hauv lub cell eukaryotic?
Nyob rau hauv eukaryotes, lub xovtooj ntawm cov khoom siv caj ces, lossis DNA, muaj nyob rau hauv ib lub organelle hu ua nucleus, qhov uas nws tau teeb tsa hauv cov molecules ntev hu ua chromosomes.
DNA sawv cev rau dab tsi ?
Teb: Deoxyribonucleic acid - ib qho loj molecule ntawm nucleic acid pom nyob rau hauv lub nuclei, feem ntau nyob rau hauv chromosomes, ntawm cov hlwb nyob. DNA tswj cov haujlwm xws li kev tsim cov protein molecules hauv lub cell, thiab nqa cov qauv rau kev yug me nyuam ntawm txhua tus yam ntxwv ntawm nws cov hom tshwj xeeb.
