Qhov sib txawv tseem ceeb ntawm gram zoo thiab gram negative cell phab ntsa yog tias gram zoo cell phab ntsa muaj ib txheej peptidoglycan tuab nrog teichoic acids thaum gram negative cell phab ntsa muaj nyias peptidoglycan txheej ncig los ntawm ib daim nyias nyias. Lwm qhov sib txawv tseem ceeb ntawm gram zoo thiab gram negative cell phab ntsa yog qhov gram zoo cell phab ntsa stains hauv ntshav xim hauv grams staining thaum grams tsis zoo cell phab ntsa stains hauv cov xim liab.
Cov kab mob yog cov kab mob me me uas muaj ib lub xov tooj ntawm tes. Lawv muaj ib lub cell phab ntsa nyob ib ncig ntawm lawv cell membrane. Cov yam ntxwv ntawm cov phab ntsa ntawm tes muaj txiaj ntsig zoo thaum sib txawv cov kab mob. Grams staining yog cov txheej txheem uas faib cov kab mob rau hauv ob pawg loj: gram negative bacteria thiab gram positive bacteria.
Tus yam ntxwv ntawm Gram Positive Cell Wall yog dab tsi?
Grams zoo kab mob yog ib pawg ntawm cov kab mob. Lawv lub cell phab ntsa yog hu ua gram zoo cell phab ntsa. Qhov no yog vim hais tias nws muaj ib tug tuab peptidoglycan txheej. Nws yog multilayered thiab muaj teichoic acids. Nyob rau hauv grams staining, gram zoo cell phab ntsa stains nyob rau hauv cov xim liab vim yog khaws cia ntawm crystal violet stain.
Daim duab 01: Gram Positive thiab Gram Negative Cell Wall
Gram zoo cell phab ntsa muaj qhov qis lipid concentration thiab qis lipopolysaccharide concentration. Nws kuj tsis muaj ib daim nyias nyias. Yog li, feem ntau cov kab mob gram zoo yog raug rau cov tshuaj tua kab mob. Lawv kuj tsis muaj qhov chaw periplasmic.
Tus yam ntxwv ntawm Gram Negative Cell Wall yog dab tsi?
Cov kab mob tsis zoo Gram muaj cov phab ntsa ntawm tes uas muaj txheej nyias peptidoglycan. Nws tsuas muaj ib txheej xwb. Txawm li cas los xij, gram negative cell phab ntsa muaj cov txheej txheem sab nrauv nyob ib puag ncig ntawm peptidoglycan txheej. Cov txheej txheem no muaj porins, lipopolysaccharides, thiab lipids. Yog li ntawd, nws muab tshuaj tua kab mob rau cov kab mob. Tsis tas li ntawd, nws muaj qhov chaw periplasmic loj.
Daim duab 02: Gram Negative Cell Wall
Thaum grams staining ua tiav, gram negative cell phab ntsa stains xim liab. Thickness ntawm lub cell phab ntsa yog 8-12 nm. Tsis zoo li gram positive bacterial cell wall, gram negative bacterial cell wall tsis muaj teichoic acids. Tab sis nws muaj qhov siab ntawm lipids.
Dab tsi zoo sib xws ntawm Gram Positive thiab Gram Negative Cell Wall?
- Gram positive thiab negative cell phab ntsa muaj nyob rau hauv cov kab mob.
- Ob leeg muaj peptidoglycan txheej.
- Lawv muab kev txhawb nqa rau cov kab mob.
Dab tsi yog qhov txawv ntawm Gram Positive thiab Gram Negative Cell Wall?
Lub thickness ntawm peptidoglycan txheej yog qhov sib txawv ntawm gram zoo thiab gram negative cell phab ntsa. Lub cell phab ntsa ntawm cov kab mob gram zoo muaj txheej tuab peptidoglycan (20-30 nm) thaum lub cell phab ntsa ntawm cov kab mob gram tsis zoo muaj txheej nyias peptidoglycan (8-12 nm). Cov qub yog multilayered thaum lub tom kawg tsuas muaj ib txheej peptidoglycan xwb. Yog li ntawd, lawv stain nyob rau hauv cov xim sib txawv thaum lub sij hawm grams staining txheej txheem. Grams zoo cell phab ntsa stains nyob rau hauv liab doog xim thaum grams negative cell phab ntsa stains nyob rau hauv cov xim liab. Cov kab mob tsis zoo yog cov tshuaj tua kab mob zoo dua cov kab mob gram zoo. Qhov no yog vim gram negative cell phab ntsa yog impermeable thiab muaj ib tug txheej membrane.
Ntxiv mus, gram zoo cell phab ntsa tsis muaj cov txheej txheem sab nrauv thaum gram negative cell phab ntsa ua. Tsis tas li ntawd, tus qub tsis tiv taus cov tshuaj tua kab mob thaum yav tas los yog cov tshuaj tua kab mob ntau dua. Muaj Teichoic acids nyob rau hauv gram zoo cell phab ntsa, tab sis tsis nyob rau hauv lub gram negative cell phab ntsa. Ntxiv mus, lipopolysaccharide thiab lipid concentrations nyob rau hauv gram zoo cell phab ntsa yog qis dua nyob rau hauv gram negative cell phab ntsa.
Summary – Gram Positive vs Gram Negative Cell Wall
Nws yog phab ntsa cell hauv cov kab mob uas pab kom cov kab mob sib txawv. Qhov sib txawv ntawm gram zoo cell phab ntsa thiab gram negative cell phab ntsa yog lub thickness ntawm peptidoglycan txheej.
