Video: Dab tsi yog tus neeg sawv cev xaiv hauv microbiology?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Selective Agents . Cov khoom lag luam> Microbiology > Selective Agents . Muaj ntau hom tshuaj tua kab mob ua haujlwm xaiv tus neeg sawv cev hauv xaiv kab lis kev cai xov xwm kom zoo cais, los yog xaiv rau, ib tug pathogenic microogranism los ntawm cov zaub mov, soj ntsuam, thiab ib puag ncig kuaj.
Tsuas yog li ntawd, tus neeg sawv cev xaiv yog dab tsi?
Cov Selective Agent yog ib puag ncig yam uas ua rau cov pejxeem. Txoj Kev Xaiv Siab yog qhov cuam tshuam ntawm Kev Xaiv Tsa Ntuj ua rau cov pej xeem. Kev Xaiv Siab -Cov kab mob uas muaj txiaj ntsig zoo dua rau lawv ib puag ncig muaj sia nyob lub siab ntawm xaiv tus neeg sawv cev.
Tom qab ntawd, lo lus nug yog, dab tsi yog cov piv txwv ntawm kev xaiv xov xwm? Piv txwv ntawm cov xov xwm xaiv muaj xws li:
- Eosin methylene xiav muaj cov dyes uas muaj tshuaj lom rau cov kab mob Gram-positive.
- YM (cov poov xab extract, malt extract agar) muaj pH tsawg, deterring cov kab mob loj hlob.
- MacConkey agar yog rau cov kab mob Gram-negative.
- Hektoen enteric agar yog xaiv rau cov kab mob Gram-negative.
Tsis tas li ntawd, tus piv txwv xaiv tus neeg sawv cev yog dab tsi?
A xaiv tus neeg sawv cev yog ib qho tseem ceeb, ib puag ncig lossis lwm yam, uas cuam tshuam rau fertility lossis kev tuag. Xaiv tus neeg sawv cev suav nrog cov khoom noj muaj, cov tsiaj nyeg hauv zos, thiab ntau lwm yam hauv lossis ib puag ncig biosphere lossis ib tus neeg. Ib tug neeg lub cev fertility yog ib qho yooj yim heev piv txwv ntawm a xaiv yam.
Lub ntsiab lus ntawm kev xaiv xov xwm yog dab tsi?
Xaiv Media . Hom tom ntej ntawm xov xwm yog xaiv media . A xaiv media yog tsim los ntawm cov khoom xyaw tshwj xeeb los tiv thaiv kev loj hlob ntawm qee hom kab mob microbes hauv cov kab lis kev cai sib xyaw thaum tso cai rau lwm tus kom loj hlob. Ntxiv dua thiab, txhawm rau txhawm rau nkag siab qhov no txhais , cia saib ib qho piv txwv ntawm a xaiv nruab nrab.
Pom zoo:
Dab tsi yog qhov zoo dua oxidizing tus neeg sawv cev hauv mn3+ thiab mn4+?
Vim li cas Mn + 3 yog tus neeg sawv cev oxidizing zoo? Txij li thaum Mn2+ muaj ib nrab-sau orbital, nws ruaj khov dua Mn3+, ua rau Mn3+ muaj lub siab nyiam kom yooj yim txo (piv txwv li ua cov oxidizer zoo) rau hauv Mn2+ kom ruaj khov rau nws tus kheej
Dab tsi yog tus neeg sawv cev dehydrating nrog piv txwv?
Cov tshuaj nquag siv los ua kom lub cev qhuav dej muaj xws li concentrated phosphoric acid, concentrated sulfuric acid, kub ceramic thiab kub aluminium oxide. Cov tshuaj tiv thaiv lub cev qhuav dej yog tib yam li lub cev qhuav dej synthesis
Dab tsi yog tus neeg sawv cev complexing?
Chemistry. ib tug compound nyob rau hauv uas nws tus kheej uas twb muaj lawm molecules los yog ions ntawm ib tug nonmetal (complexing agent) tsim kev sib koom tes nrog ib tug hlau atom los yog ion. Ib lub koom haum tsim los ntawm cov molecules uas cov neeg koom nrog tswj ntau yam ntawm lawv cov tshuaj lom neeg: receptor-hormone complex, enzyme-substrate complex
Tus neeg sawv cev oxidizing ua dab tsi hauv cov tshuaj tiv thaiv redox?
Tus neeg sawv cev oxidizing, los yog oxidant, nce electrons thiab txo qis hauv cov tshuaj tiv thaiv. Kuj tseem hu ua tus txais hluav taws xob, tus neeg sawv cev oxidizing feem ntau yog nyob rau hauv ib qho ntawm nws cov oxidation ntau dua vim tias nws yuav nce electrons thiab txo qis
Dab tsi yog tus neeg sawv cev ntawm kev yaig?
Cov txheej txheem hu ua huab cua rhuav tshem cov pob zeb kom lawv tuaj yeem nqa mus los ntawm cov txheej txheem hu ua erosion. Dej, cua, dej khov, thiab nthwv dej yog cov neeg sawv cev ntawm kev yaig uas hnav tawm ntawm lub ntiaj teb