Video: Puas yog tib neeg lub hlwb Gram zoo lossis Gram tsis zoo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tib neeg hlwb tsis muaj cell phab ntsa lossis Peptidoglycan (PDG). Cov hlwb tuaj yeem coj xim stain . Ib qho ntawm koj cov neeg koom tes hauv chav kuaj tau ua raws li cov txheej txheem kev khiav haujlwm tau pom zoo Gram - zoo thiab Gram - tsis zoo tswj cov kab mob ntawm nws Gram stain ntawm ib hom tsis paub.
Khaws qhov no hauv kev txiav txim siab, puas yog tib neeg lub hlwb Gram zoo lossis tsis zoo?
Tib neeg hlwb tsis muaj cell phab ntsa lossis Peptidoglycan (PDG). Cov hlwb tuaj yeem coj xim stain . Ib qho ntawm koj cov neeg koom tes hauv chav kuaj tau ua raws li cov txheej txheem kev khiav haujlwm tau pom zoo Gram - zoo thiab Gram - tsis zoo tswj cov kab mob ntawm nws Gram stain ntawm ib hom tsis paub.
Qhov thib ob, yog Bacillus gram zoo lossis tsis zoo? Bacillus yog hom rod -zoo li tus, endospore-forming aerobic los yog facultatively anaerobic, Gram-zoo kab mob; Hauv qee hom kab lis kev cai tuaj yeem hloov Gram-tsis zoo nrog lub hnub nyoog.
Tsuas yog li ntawd, qhov txawv ntawm kab mob gram zoo thiab tsis zoo yog dab tsi?
Cov kab mob Gram zoo muaj cov phab ntsa ntawm tes tsim los ntawm cov txheej tuab ntawm peptidoglycan. Gram negative bacteria muaj cov phab ntsa ntawm tes nrog ib txheej nyias ntawm peptidoglycan. Cov phab ntsa ntawm tes kuj tseem muaj cov txheej txheem sab nrauv nrog lipopolysaccharide (LPS) molecules txuas.
Ua li cas koj thiaj paub tias nws Gram zoo lossis tsis zoo?
Ua ntej, siv lead ua violet ntxiv. Tom qab ntawd nws yog stained nrog iodine, thiab thaum kawg nrog safranin. Tom qab ntawd nws dhau los ntawm kev ntxuav dej cawv. Cov kab mob uas khaws cov ntshav liab stain los ntawm crystal violet yog grams - zoo , thiab cov uas noj cov liab stain los ntawm safranin yog grams - tsis zoo ."
Pom zoo:
Puas yog tus neeg xyuas pib tsis zoo ntawm cov hluav taws xob tam sim no yog hlau lossis nonmetal?
Tshooj 6 - Lub Sij Hawm Lub Sij Hawm A B nonmetals yog ib qho khoom siv uas zoo li cov neeg ua haujlwm tsis zoo ntawm cov cua sov thiab hluav taws xob tam sim no; nonmetals feem ntau muaj cov khoom sib txawv rau cov hlau, metalloid ib lub caij uas nyiam muaj cov khoom zoo ib yam li cov hlau thiab nonmetals
Tib neeg lub hlwb twg yog haploid?
Haploid piav txog ib lub xovtooj ntawm tes uas muaj ib pawg chromosomes. Lub sij hawm haploid kuj tuaj yeem xa mus rau tus lej ntawm chromosomes hauv qe lossis phev hlwb, uas tseem hu ua gametes. Hauv tib neeg, gametes yog cov hlwb haploid uas muaj 23 chromosomes, txhua tus ntawm ib tus khub chromosome uas muaj nyob hauv cov hlwb diplod
Puas yog Gram zoo lossis tsis zoo txaus ntshai?
Hauv kev sib piv rau Gram zoo, cov kab mob Gram-negative muaj kev phom sij ntau dua li cov kab mob, vim muaj cov tshuaj ntsiav los yog cov slime txheej uas npog lub txheej membrane. Ua raws li txoj kev no, cov kab mob micro tuaj yeem nkaum nws cov antigens saum npoo uas yuav tsum tau ua rau tib neeg lub cev tiv thaiv kab mob
Dab tsi xim ntawm tib neeg lub hlwb Gram stain?
Thawj stain, tag nrho cov kab mob yog stained ntshav. Counter stain. Qhov no stains decolorized kab mob liab. Tib neeg lub hlwb tuaj yeem stained nrog crystal violet thiab safranin, yog li vim li cas tib neeg lub hlwb tsis tuaj yeem ua gram stained?
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog