2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv lub cev hloov qhov tsos lossis daim ntawv ntawm cov teeb meem hloov tab sis hom teeb meem hauv cov khoom tsis. Txawm li cas los xij hauv kev hloov pauv tshuaj, hom teeb meem hloov pauv thiab tsawg kawg ib yam tshiab nrog cov khoom tshiab yog tsim. … Tag nrho cov tshuaj tiv thaiv yog thim rov qab txawm hais tias qhov no tuaj yeem nyuaj hauv kev xyaum.
Qhov txawv ntawm lub cev thiab tshuaj hloov pauv li cas?
Lub cev hloov pauv tsuas yog hloov cov tsos mob, tsis yog nws cov tshuaj muaj pes tsawg leeg. … Cov tshuaj hloov pauv ua rau cov khoom hloov pauv mus rau hauv cov khoom siv tag nrho nrog cov qauv tshuaj tshiab. Kev hloov tshuaj lom neeg kuj hu ua tshuaj tiv thaiv.
3 qhov sib txawv ntawm lub cev thiab tshuaj hloov pauv li cas?
Kev hloov lub cev yog qhov hloov pauv ib ntus. Kev hloov tshuaj lom neeg yog kev hloov mus tas li. … Qee qhov piv txwv ntawm kev hloov ntawm lub cev yog khov dej, melting of wax, boiling of water, etc. Ob peb piv txwv ntawm kev hloov tshuaj yog zom zaub mov, hlawv cov thee, xeb, thiab lwm yam.
Qhov txawv ntawm lub cev thiab tshuaj hloov pauv yog dab tsi?
Kev hloov tshuaj lom neeg tshwm sim los ntawm cov tshuaj tiv thaiv tshuaj, thaum lub cev hloov pauv yog thaum cov ntaub ntawv hloov pauv tab sis tsis yog tshuaj lom neeg. Piv txwv ntawm cov tshuaj hloov pauv yog hlawv, ua noj, xeb, thiab rotting. Piv txwv ntawm kev hloov lub cev yog boiling, melting, khov, thiabshredding.
Dab tsi yog qhov txawv ntawm kev hloov lub cev thiab tshuaj hloov pauv rau menyuam yaus?
tshuaj hloov pauv rau cov menyuam yaus hauv qib 3, 4 thiab 5th! Hauv kev hloov tshuaj, cov khoom tshiab yog tsim, zoo li thaum koj hlawv tswm ciab. Hauv hloov lub cev, tsis muaj tshuaj tshiab, zoo li thaum dej tig mus rau dej khov.
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.
