Qhov sib txawv tseem ceeb ntawm F plasmid thiab R plasmid yog F plasmid yog ib qho DNA extrachromosomal uas muaj cov noob coding rau fertility yam. Lub caij no, R plasmid yog ib qho DNA extrachromosomal uas muaj cov noob coding rau kev tiv thaiv cov tshuaj tua kab mob.
A plasmid yog ib lub voj me me ob-stranded DNA tam sim no hauv cov kab mob. Lawv yog cov DNA extrachromosomal thiab muaj peev xwm ntawm tus kheej rov ua dua. Lawv nqa cov noob tsim nyog rau lawv tus kheej replication thiab tu. Dhau li ntawm cov noob uas tsim nyog rau kev rov ua dua tus kheej, plasmids tseem muaj ob peb lwm cov noob tsim nyog rau coding cov yam ntxwv tshwj xeeb, xws li tshuaj tua kab mob, degradation ntawm macromolecules, hnyav hlau kam rau ua, tsim cov bacteriocins, hloov cov noob, thiab lwm yam., uas muaj txiaj ntsig zoo rau cov kab mob.
Ntxiv mus, muaj ntau yam ntawm plasmids. R plasmids thiab F plasmids yog ob hom ntawm lawv. F plasmid yog ib qho fertility plasmid uas muaj peev xwm ntawm kev sib txuas thiab tsim tawm ntawm kev sib deev pili. R plasmid yog ib qho kev tiv thaiv plasmid uas muaj peev xwm muab cov tshuaj tiv thaiv kab mob thiab qee yam kab mob loj hlob inhibitors.
F Plasmid yog dab tsi?
Qee cov kab mob muaj F plasmids ntxiv rau lawv cov chromosomes. Cov hom no yog hu ua F + hom. Lawv ua raws li cov neeg pub dawb los yog cov txiv neej hauv cov kab mob sib txuas, ib qho kev sib deev kev tsim tawm los ntawm cov kab mob uas pab txhawb cov kab rov tav hloov pauv ntawm cov kab mob. F plasmids tuaj yeem luam tawm ntawm nws tus kheej thiab muaj cov txheej txheem fertility coding genes hu ua tra genes. Li no, cov DNA extrachromosomal (plasmids) no muaj npe hu ua F plasmids vim yog F yam lossis fertility factor. Fertility factor coding noob yog qhov tseem ceeb rau kev hloov pauv lossis kev sib txuas.
Cov kab mob kab mob uas tau txais F plasmids los ntawm F + hom kab mob hu ua F- hom lossis cov neeg tau txais hom kab mob lossis poj niam. F + hom tuaj yeem pub lawv cov khoom siv caj ces lossis cov DNA ntxiv rau lwm tus kab mob.
Daim duab 01: F Plasmid thiab Conjugation
Cov kab mob sib kis pib nrog kev tsim tawm ntawm kev sib deev pili los ntawm F + hom kab mob mus rau F- kab mob. Kev sib deev pilus pab txhawb lub cell mus rau kev sib txuas lus ntawm tes thiab kev sib cuag los ntawm kev tsim lub raj txuas. Qhov kev tsim no yog tswj hwm los ntawm cov noob qoob loo uas yug los ntawm F + hom. F + replicates nws F plasmid thiab ua ib daim qauv ntawm nws mus rau hauv F- hom. Cov theej F plasmid hloov mus rau F- hom ntawm lub raj txuas. Thaum nws hloov mus, conjugation tube dissociates. Tus neeg txais kev lim ntshav dhau los ua F +. Thaum lub sij hawm cov kab mob sib txuas, tsuas yog F plasmid hloov los ntawm F + strain mus rau F- hom yam tsis tau hloov cov kab mob chromosome.
R Plasmid yog dab tsi?
R plasmid lossis tiv thaiv plasmid yog ib qho ntxiv-chromosomal DNA ntawm cov kab mob uas muaj cov noob cai rau tshuaj tua kab mob. Yog li ntawd, R plasmids uas muaj cov kab mob tshwm sim tawm tsam cov tshuaj tua kab mob. R plasmids tau pom nyob rau hauv cov kab mob Shigella ua ntej los ntawm cov kws tshawb fawb Nyij Pooj. R plasmids tau paub tias yog R yam ua ntej qhov xwm txheej ntawm plasmids tau nkag siab. Feem ntau, R plasmids muaj ntau yam tshuaj tiv thaiv kab mob. Hauv lwm lo lus, ib qho R yam codes rau ntau tshaj ib hom tshuaj tiv thaiv kab mob, qee zaum mus txog 8 cov tshuaj tua kab mob sib txawv.
Daim duab 02: R Plasmid
Cov tshuaj tiv thaiv kab mob lossis R plasmids tuaj yeem kis tau los ntawm ib tus kab mob mus rau lwm tus thiab kis tau los ntawm genera thiab tsev neeg. Nws tshwm sim hauv F plasmids ntawm cov kab mob sib txuas; ib tug txhais tau tias ntawm kev sib deev reproduction pom nyob rau hauv cov kab mob. Thaum cov kab mob sib txuas, R yam uas muaj F plasmid tiv tauj nrog lwm tus kab mob thiab kab rov tav hloov R yam ntawm ob kab mob los ntawm kev sib deev pilus. Thiab, qhov no yog txoj hauv kev tshaj plaws ntawm kev sib kis thiab kev loj hlob ntawm cov tshuaj tua kab mob hauv cov kab mob.
Dab tsi yog qhov zoo sib xws ntawm F Plasmid thiab R Plasmid?
- F plasmid thiab R plasmid yog ob hom plasmids.
- Cov kab mob yog cov kab mob uas muaj cov plasmids.
- Ntau plasmids nqa ob qho F thiab R yam ua ke.
- Lawv yog cov DNA extrachromosomal.
- Ob hom yog kaw cov voj voog DNA molecules.
- Lawv muaj ob txoj hlua DNA.
- Ntxiv mus, lawv muaj cov noob uas muab cov txiaj ntsig zoo ntxiv rau cov kab mob.
- Cov plasmids tuaj yeem rov ua nws tus kheej.
- Ntxiv mus, lawv tuaj yeem kis los ntawm ib tus kab mob mus rau lwm tus thiab koom nrog kev hloov cov noob kab rov tav.
Qhov txawv ntawm F Plasmid thiab R Plasmid yog dab tsi?
F plasmid yog plasmid uas muaj qhov tsim nyog fertility xav tau rau kev sib deev conjugation thiab tsim ntawm kev sib deev pili. Lub caij no, R plasmid yog cov plasmid uas muaj cov noob uas xav tau rau cov tshuaj tiv thaiv kab mob. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm F plasmid thiab R plasmid. Ntxiv mus, F plasmids muaj peev xwm tsim kev sib deev pili. Ntawm qhov tod tes, dav dav R plasmids tsis tuaj yeem tsim kev sib deev pili. Yog li, qhov no yog lwm qhov sib txawv ntawm F plasmid thiab R plasmid.
Tsis tas li ntawd, qhov sib txawv tseem ceeb ntawm F plasmid thiab R plasmid yog qhov kev hem thawj uas lawv ua. Qhov ntawd yog; Kev sib kis ntawm F plasmid tsis ua rau muaj kev hem thawj tiag tiag tshwj tsis yog nws muaj R qhov tseem ceeb, thaum kev sib kis ntawm R plasmid yog ib qho kev hem thawj tiag tiag vim nws pab tsim cov tshuaj tiv thaiv kab mob hauv cov kab mob.
Summary – F Plasmid vs R Plasmid
F plasmid yog plasmid uas nqa cov txiaj ntsig fertility uas tso cai rau kev hloov cov khoom siv caj ces los ntawm ib tus kab mob mus rau lwm qhov los ntawm kev sib txuas. Ntxiv mus, F plasmids yog cov episomes uas tuaj yeem ua ke nws cov DNA rau hauv chromosome ntawm lwm cov kab mob. Txawm li cas los xij, R plasmid yog ib qho plasmid uas muaj qhov cuam tshuam tsis zoo uas cuam tshuam rau cov tshuaj tua kab mob lossis lwm yam kab mob loj hlob inhibitors. Ntau cov plasmids muaj ob qho F thiab R yam. Kev sib kis ntawm R plasmids yog ib qho kev hem thawj tiag tiag tshaj li kev sib kis ntawm F plasmids txij li cov kab mob tau txais kev tiv thaiv tiv thaiv cov tshuaj tua kab mob. Yog li, qhov no qhia txog qhov sib txawv ntawm F plasmid thiab R plasmid.
