2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
3. Exhaustion theem. Qhov theem no yog qhov tshwm sim ntawm kev ntxhov siab ntev lossis mob ntev. Kev tawm tsam nrog kev ntxhov siab ntev ntev tuaj yeem ua rau koj lub cev, kev xav, thiab kev puas siab puas ntsws mus rau qhov chaw uas koj lub cev tsis muaj zog los tawm tsam kev ntxhov siab.
Yuav ua li cas yog 3 theem ntawm kev hloov pauv dav dav?
Kev hloov pauv dav dav, suav nrog peb theem: (1) tswb, (2) tsis kam, thiab (3) qaug zog. Tswb, sib ntaus lossis ya davhlau, yog qhov teb tam sim ntawm lub cev rau 'pom' kev ntxhov siab.
Thaum lub sijhawm twg ntawm qhov kev hloov pauv dav dav lub cev puas ua rau lub cev qaug zog?
Kev qaug zog yog theem thib peb thiab zaum kawg hauv cov qauv kev hloov pauv dav dav. Nyob rau lub sijhawm no, tag nrho cov khoom siv hauv lub cev thaum kawg tau ploj mus thiab lub cev tsis tuaj yeem ua haujlwm li qub. Cov tsos mob ntawm lub paj hlwb thawj zaug tuaj yeem rov tshwm sim (hws tawm, tsa lub plawv dhia, thiab lwm yam).
Yuav ua li cas thaum txhua theem ntawm kev hloov pauv dav dav?
Kev hloov pauv dav dav
Nws muaj peb theem: tswb, tiv thaiv, thiab qaug zog. Tswb – Qhov no tshwm sim thaum peb xub pom ib yam dab tsi uas nyuaj siab, thiab ces lub cev pib sib ntaus sib tua-los yog-flight teb (raws li tau tham ua ntej).
Lub cev ua li cas thaum lub sijhawm qaug zog?
Nyob rau theem qaug zog tej zaum yuav muaj tag nrho lub cev ua haujlwm, lossis ib qhokev puas tsuaj ntawm lub cev lossis lub cev. Thaum lub sijhawm no, qib qis ntawm cortisol thiab aldosterone tau tso tawm, ua rau txo qis gluconeogenesis, hypoglycemia sai, sodium poob thiab potassium tuav.
Pom zoo:
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?
Kev hloov pauv dav dav txawv li cas los ntawm kev hloov pauv tshwj xeeb?
Muaj ob hom kev hloov pauv: dav dav thiab tshwj xeeb. Hauv kev hloov pauv dav dav, tus kab mob bacteriophages tuaj yeem khaws ib feem ntawm tus tswv tsev genome. Hauv qhov sib piv, nrog kev hloov pauv tshwj xeeb, cov kab mob bacteriophages khaws tsuas yog qee qhov tshwj xeeb ntawm tus tswv tsev DNA.
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.
