Cov txheej txheem:
Video: Koj yuav txheeb xyuas Gram staining bacteria li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Gram Stain Identification
- Thov thawj stain (ib liab stain hu ua crystal violet) mus rau lub tshav kub-tso smear ntawm a kab mob kab lis kev cai.
- Siv iodine rau saum cov siv lead ua violet.
- Ntxuav cov hlwb nrog cawv los yog acetone.
- Stain cov hlwb dua (counterstain) nrog cov xim liab, xws li safranin liab lossis yooj yim fuchsin.
Cov lus nug tseem yog, Gram staining pab txheeb xyuas cov kab mob li cas?
Gram staining sib txawv kab mob los ntawm cov tshuaj thiab lub cev ntawm lawv cov phab ntsa ntawm tes. Gram -zoo hlwb muaj txheej tuab ntawm peptidoglycan nyob rau hauv lub cell phab ntsa uas khaws cov thawj stain , siv lead ua violet.
Qhov thib ob, Gram stain qhia dab tsi? A Gram stain yog siv, nrog rau kab lis kev cai ntawm cov khoom siv los ntawm qhov chaw muaj kab mob, mus rau txheeb xyuas ua rau muaj kab mob. Cov Gram stain muab cov txiaj ntsig ua ntej ntawm seb puas muaj kab mob yog tam sim no thiab hom dav dav, xws li cov duab thiab seb lawv yog Gram - zoo los yog Gram - tsis zoo.
Raws li txoj cai, koj tuaj yeem qhia tau li cas yog tias tus kab mob Gram zoo lossis tsis zoo?
Gram - cov kab mob zoo tshwm xiav lossis violet thiab grams - kab mob tsis zoo tshwm liab liab. TSEEM CEEB: Yog cov smear yog tuab heev, cov hlwb tuaj yeem tshwm sim Gram - zoo hauv cheeb tsam tuab heev. Tej zaum koj yuav pom Gram -variability los ntawm tuab mus rau nyias qhov chaw.
Cov kab mob gram negative yog xim dab tsi?
Gram negative bacteria tshwm ib daj ntseg liab xim thaum pom nyob rau hauv ib lub teeb microscope nram qab no Gram staining. Qhov no yog vim cov qauv ntawm lawv cov phab ntsa ntawm tes tsis tuaj yeem khaws cov crystal violet stain li ntawd xim tsuas yog los ntawm safranin counterstain.
Pom zoo:
Yuav ua li cas koj txheeb xyuas lub kaum ntse ntse?
Qhov kev sib tshuam ntawm ob kab tau tsim lub kaum sab xis. Lub kaum sab xis yog ob lub kaum sab xis uas muaj kev sib raug zoo tshwj xeeb. Lub kaum sab xis khub hauv daim duab no muaj qhov ntsuas uas sib npaug 180 ° uas yog qhov ntsuas ntawm lub kaum sab xis. Lub kaum sab xis uas muaj qhov sib npaug ntawm 180 ° yog hu ua cov ces kaum ntxiv
Yuav ua li cas koj txheeb xyuas ib qho kev tawm tsam ua khub?
Txheeb xyuas ob khub ntawm kev ua-kev tawm dag zog. Siv cov cim 'ko taw A', 'ko taw C', thiab 'pob B' hauv koj cov lus. Nyem lub khawm kom pom cov lus teb. Thawj khub ntawm kev txiav txim siab-kev quab yuam ua khub yog: ko taw A thawb pob B mus rau sab xis; thiab pob B thawb ko taw A mus rau sab laug
Vim li cas peb thiaj cia siab tias cov kab mob Gram tsis zoo yuav stain liab liab thaum lub sij hawm Gram staining txheej txheem?
Thaum cov kab mob gram zoo stain violet vim muaj cov txheej txheem peptidoglycan tuab nyob rau hauv cov phab ntsa ntawm lawv cov cell, cov kab mob gram tsis zoo stain liab, vim yog cov txheej peptidoglycan thinner hauv lawv cov phab ntsa ntawm tes (peptidoglycan txheej tuab dua tso cai rau cov kab mob gram zoo stains violet. tuav lub stain, tab sis ib txheej nyias
Yuav ua li cas koj txheeb xyuas lub metalloid?
Khoom siv: Germanium; Silicon; Tellurium; Boron
Yuav ua li cas koj txheeb xyuas qhov cuam tshuam craters?
Kev txheeb xyuas qhov cuam tshuam craters Tsis yog tawg volcanic craters feem ntau yuav txawv ntawm qhov cuam tshuam craters los ntawm lawv cov duab tsis zoo thiab kev sib koom ua ke ntawm volcanic flows thiab lwm yam khoom siv hluav taws xob. Impact craters tsim cov pob zeb melted ib yam nkaus, tab sis feem ntau hauv cov ntim me me nrog cov yam ntxwv sib txawv