![Qhov twg yog khub epimeric? Qhov twg yog khub epimeric?](https://i.tvmoviesgames.com/preview/questions/17843741-which-is-epimeric-pair-j.webp)
2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Epimer: Ib qho ntawm ib khub ntawm stereoisomers uas txawv ntawm qhov kev teeb tsa ntawm ib lub stereocenter. Thaum cov molecule tsuas muaj ib lub stereocenter ces cov epimers yog enantiomers.
Dab tsi yog Epimer nrog piv txwv?
Epimers yog cov carbohydrates uas sib txawv hauv ib txoj haujlwm rau kev tso kawm ntawm -OH pawg. Cov piv txwv zoo tshaj yog rau D-glucose thiab D-galactose. … Lawv tsis yog enantiomers, los yog diastereomers, los yog isomers, lawv tsuas yog epimers.
Yuav ua li cas hauv qab no ua Epimeric khub?
D- Glucose, D- Mannose
YPuas yog D-glucose thiab D mannose epimers?
Lawv yog hom tshwj xeeb ntawm stereoisomers uas muaj ntau lub stereocenters tab sis txawv ntawm ib leeg los ntawm kev teeb tsa ntawm ib qho chaw stereogenic. Nyob rau hauv cov ntaub ntawv ntawm cov piam thaj thiab mannose, lawv txawv ntawm ib leeg los ntawm kev teeb tsa ntawm C-2 atom. … Yog li ntawd, glucose thiab mannose yog epimers.
Ob lub suab thaj twg yog epimers?
Epimers. Ob lub suab thaj sib txawv hauv kev teeb tsa ntawm ib qho asymmetric carbon atom hu ua epimers. Glucose thiab mannose yog C2 epimers, ribose thiab xylose yog C3 epimers, thiab gulose thiab galactose kuj yog C3 epimers (Daim duab 3).
Pom zoo:
Qhov twg yog khub sib cais?
![Qhov twg yog khub sib cais? Qhov twg yog khub sib cais?](https://i.tvmoviesgames.com/preview/questions/17865966-which-are-pairwise-disjoint-j.webp)
Pairwise disjoint events tsis muaj qhov tshwm sim zoo sib xws. … Ob qhov xwm txheej muaj kev sib koom ua ke yog tias qhov tshwm sim lawv ob leeg tshwm sim tib lub sijhawm (piv txwv li lawv lub koomhaum) yog xoom. Los ntawm cov ntsiab lus no, cov xwm txheej tsis sib koom ua ke (uas tsis muaj qhov tshwm sim zoo ib yam) kuj yog kev sib koom ua ke.
Qhov twg yog hais txog qhov kaj los yog qhov tsaus ntuj ntawm qhov ntxoov ntxoo?
![Qhov twg yog hais txog qhov kaj los yog qhov tsaus ntuj ntawm qhov ntxoov ntxoo? Qhov twg yog hais txog qhov kaj los yog qhov tsaus ntuj ntawm qhov ntxoov ntxoo?](https://i.tvmoviesgames.com/preview/questions/17873718-which-is-refers-to-the-lightness-or-the-darkness-of-the-shade-j.webp)
Vim yog hais txog qhov kaj los yog qhov tsaus ntuj ntawm cov xim. Lub teeb xim yog tint. … Xim tsaus yog hu ua ntxoov ntxoo. Lub kaw lus hu ua dab tsi los txiav txim qhov kaj thiab qhov tsaus ntuj ntawm cov xim? Hue txawv ib xim ntawm lwm tus thiab piav qhia siv cov npe xim xws li ntsuab, xiav, liab, daj, thiab lwm yam.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
![Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg? Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?](https://i.tvmoviesgames.com/preview/questions/17882690-where-is-inferior-colliculus-located-j.webp)
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
![Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg? Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?](https://i.tvmoviesgames.com/preview/questions/17890920-where-total-utility-is-at-a-maximum-marginal-utility-is-j.webp)
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
Qhov twg yog qhov kev sib raug zoo ntawm stereochemical ntawm ob khub ntawm cov molecules?
![Qhov twg yog qhov kev sib raug zoo ntawm stereochemical ntawm ob khub ntawm cov molecules? Qhov twg yog qhov kev sib raug zoo ntawm stereochemical ntawm ob khub ntawm cov molecules?](https://i.tvmoviesgames.com/preview/questions/17924469-which-is-the-stereochemical-relationship-between-this-pair-of-molecules-j.webp)
Enantiomers thiab diastereomers tsuas yog ob qho kev sib raug zoo stereochemical uas koj tuaj yeem muaj ntawm ob lub molecules. Cov stereoisomers yog ob lub molecules uas ua tiav ob qhov kev xav tau hauv qab no: Ob lub molecules yuav tsum muaj tib lub qauv molecular, thiab.