2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev hloov pauv tshuaj (tseem hu ua ib qho kev hloov pauv lossis ib qho kev hloov pauv ib leeg) yog tshuaj tiv thaiv thaum lub sijhawm ib pawg neeg ua haujlwm hauv cov tshuaj sib xyaw yog hloov los ntawm lwm pab pawg ua haujlwm. Kev hloov pauv cov tshuaj tiv thaiv yog qhov tseem ceeb hauv cov tshuaj chemical.
Kev hloov pauv kev sib piv yog dab tsi?
Tus nqi sib npaug rau cov tshuaj tiv thaiv saum toj saud yog Rate=k[Sub]. Tus nqi tshuaj tiv thaiv yog txiav txim los ntawm nws cov kauj ruam qeeb tshaj plaws. Yog li ntawd, cov pab pawg tawm tawm ntawm tus nqi tshwj xeeb uas pab txiav txim siab cov tshuaj tiv thaiv ceev. Nws suav hais tias qhov tsis muaj zog ntawm lub hauv paus conjugate, qhov zoo dua yog pawg tawm.
Qhov kev hloov pauv rau Chav Kawm 10 yog dab tsi?
Ib qhov kev hloov pauv kuj tseem hu ua ib qho kev hloov pauv hloov, ib qho kev hloov pauv, lossis ib qho kev hloov pauv. Lub cov tshuaj tiv thaiv uas ib qho atom lossis pawg ntawm cov atoms nyob rau hauv ib lub molecule yog hloov los yog hloov los ntawm txawv atoms los yog pab pawg ntawm atoms yog hu ua hloov cov tshuaj tiv thaiv.
Lub hom phiaj ntawm kev hloov pauv yog dab tsi?
Kev hloov pauv cov tshuaj tiv thaiv yog cov tshuaj lom neeg cov tshuaj tiv thaiv thaum lub sijhawm ib pab pawg ua haujlwm hloov lub atom lossis lwm pab pawg ua haujlwm txuas nrog cov pa roj carbon atom hauv cov khoom sib xyaw.
Yuav ua li cas hloov cov tshuaj tiv thaiv piav qhia hom kev hloov pauv nrog cov txheej txheem?
Kev hloov pauv tau muab ua ob hom, uasyog lub npe hu ua cov tshuaj tiv thaiv nucleophilic thiab cov tshuaj tiv thaiv electrophilic. Ob qho kev cuam tshuam no feem ntau txawv ntawm hom atom, uas txuas nrog nws cov molecule qub. Thiab, nyob rau hauv cov tshuaj tiv thaiv nucleophilic, lub atom raug xa mus rau cov khoom siv hluav taws xob ntau.
Pom zoo:
Dab tsi yog qhov hloov pauv thiab hloov pauv hloov pauv?
Point mutations hloov ib leeg nucleotide. Frameshift kev hloov pauv yog ntxiv lossis tshem tawm ntawm nucleotides uas ua rau muaj kev hloov pauv hauv kev nyeem ntawv. frameshift thiab point mutation yog dab tsi? Ib qho kev hloov pauv cuam tshuam rau ib khub hauv paus.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
Los ntawm kev hloov pauv hloov pauv hloov pauv?
Kev hloov pauv hloov pauv hloov pauv (TMA) yog qhov isothermal (tsis hloov pauv nucleic acid kub), ib leeg-tube nucleic acid amplification system siv ob lub enzymes, RNA polymerase thiab thim rov qab kev sau ntawv. … Cov txheej txheem no tuaj yeem siv los tsom rau RNA thiab DNA.
