Video: Cov txheej txheem rau kev xaiv chromophore yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov yam los ntawm qhov uas cov spheres sib txawv yog qhov kev ncua deb thiab kev sib cuam tshuam ntawm qhov chaw ntawm cov molecules zoo li conjugation thiab lwm yam. Feem ntau cov kev hloov hauv qhov thib ob tuaj yeem cuam tshuam rau qhov kos npe thiab qhov loj ntawm CE whereas hloov hauv spheres nyob deb ua rau muaj kev cuam tshuam me me.
Hauv qhov no, piv txwv chromophore yog dab tsi?
Feem ntau piv txwv suav nrog retinal (siv rau hauv lub qhov muag kom pom lub teeb), ntau yam xim zaub mov, ntaub dyes (azo compounds), pH indicators, lycopene, β-carotene, thiab anthocyanins. Ntau yam xwm txheej hauv a chromophore cov qauv nkag mus rau hauv kev txiav txim siab ntawm thaj tsam wavelength nyob rau hauv ib spectrum chromophore yuav nqus.
Ib sab saum toj no, pawg Chromophoric yog dab tsi? Kev txhais ntawm chromophore.: ib chemical pab pawg (xws li azo pab pawg ) uas absorbs lub teeb ntawm ib tug ntau zaus thiab thiaj li imparts xim rau ib tug molecule kuj: ib tug xim chemical compound.
Ua li no, koj yuav txheeb xyuas chromophores li cas?
Tsis muaj txoj cai rau lub kev txheeb xyuas ntawm a chromophore.
Kev txheeb xyuas ntawm chromophores:
- Spectrum muaj ib pawg nyob ze 300 mµ yuav muaj ob los yog peb conjugated units.
- Absorption bands nyob ze 270-350 mµ nrog qhov siv tsawg heev ?max 10-100 yog vim n-π * kev hloov pauv ntawm pawg carbonyl.
Dab tsi yog qhov ua haujlwm ntawm chromophore pawg ntawm cov stain?
Stain - Nws yog ib qho organic compound uas muaj ob qho tib si auxochrome thiab pawg chromophore . Stains yog siv rau cov xim lom neeg ua hauj lwm. Chromophore pawg yog ib tug nqi molecule cov molecules tau khi rau them cellular tebchaw xws li cov proteins thiab nucleic acid.
Pom zoo:
Dab tsi yog qhov txawv ntawm kev xaiv kev taw qhia thiab kev xaiv cuam tshuam?
Hauv kev xaiv cov kev taw qhia, cov pej xeem cov noob caj noob ces hloov mus rau qhov tshiab phenotype thaum raug kev hloov pauv ib puag ncig. Hauv kev sib txawv lossis kev cuam tshuam kev xaiv, qhov nruab nrab lossis nruab nrab phenotypes feem ntau tsis haum dua li qhov phenotype huab cua thiab tsis zoo li yuav ua rau muaj txiaj ntsig zoo hauv cov pej xeem
Cov xim dab tsi yog cov hlwb feem ntau ua ntej siv thawj cov xim rau cov txheej txheem Gram stain?
Ua ntej, siv lead ua violet, thawj stain, yog siv rau lub tshav kub-tso smear, muab tag nrho cov hlwb xim liab
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev xaiv cov phooj ywg thiab kev xaiv pab pawg?
Kev xaiv Kin, hais lus ntxhib, yog kev xaiv ntawm qhov sib txawv ntawm qhov tsis ncaj ncees (rb ≠ 0) uas tshwm sim hauv cov neeg siab-K (cov pej xeem uas muaj kev sib raug zoo ntawm cov txheeb ze); whereas kev xaiv pab pawg, kwv yees hais lus, yog kev xaiv ntawm qhov sib txawv ntawm qhov tsis muaj zog (rb ≠ 0) uas tshwm sim hauv cov neeg siab-G (cov pej xeem
Dab tsi yog txheej txheem spontaneous thiab non-spontaneous txheej txheem?
Cov txheej txheem spontaneous yog ib qho uas tshwm sim yam tsis muaj kev cuam tshuam ntawm sab nraud. Ib txoj kev uas tsis yog tshwm sim yuav tsis tshwm sim yog tias tsis muaj kev cuam tshuam ntawm sab nraud
Dab tsi tshwm sim hauv cov txheej txheem ntawm kev xaiv ntuj?
Yuav ua li cas tshwm sim nyob rau hauv tus txheej txheem ntawm kev xaiv ntuj? Kev xaiv ntuj tshwm sim nyob rau hauv txhua qhov xwm txheej uas cov tib neeg yug los ntau dua li tuaj yeem muaj sia nyob (kev tawm tsam rau lub neej), muaj kev hloov pauv ntawm ntuj tsim (variation thiab adaptation), thiab muaj kev sib txawv ntawm cov tib neeg (kev ciaj sia taus ntawm fittest.)