Cov txheej txheem:
- Yuav ua li cas thiaj li cuam tshuam rau kev sau ntawv?
- Pob txhim kho pib hloov pauv?
- Yuav ua li cas hloov pauv tau?
- Yuav ua li cas hloov cov ntaub ntawv txhawb nqa ua haujlwm?
Video: Pob txhim kho pib sau ntawv?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Ib qho ua kom muaj zog pib hloov pauv ntawm nws RNA ua ntej ua kom cov ntaub ntawv hloov pauv ntawmtus xa xov RNA los ntawm nws lub hom phiaj gene.
Yuav ua li cas thiaj li cuam tshuam rau kev sau ntawv?
Txhim kho cov kab ke yog cov txheej txheem DNA tswj hwm uas, thaum khi los ntawm cov proteins tshwj xeeb hu ua cov khoom hloov pauv, txhim kho cov kev hloov pauv ntawm cov noob caj noob cesTsis tas li ntawd, cov kab ke txhim kho tuaj yeem muab tso rau hauv ob qho tib si rau pem hauv ntej lossis reversed kab lus orientations thiab tseem muaj feem cuam tshuam cov noob transcription. …
Pob txhim kho pib hloov pauv?
Txoj kev txhim kho yog cov txheej txheem tswj hwm uas qhib kev txhawb nqa kev hloov pauvhla qhov deb loj thiab ntawm nws tus kheej ntawm kev taw qhia (Serfling li al.1985). Txawm hais tias ob tus neeg txhawb nqa thiab cov neeg txhawb nqa tau paub txog khi cov ntsiab lus hloov pauv (TFs), tsuas yog cov neeg txhawb nqa tau xav tias yuav pib sau los ntawm RNA polymerase II (Pol II).
Yuav ua li cas hloov pauv tau?
Txhim kho yog feem ntau tau sau tseg hauv xovtooj ntawm tes thiab tej zaum yuav ua rau lub xeev ntawm tes. Cov qib Cga eRNA tau pom los cuam tshuam txog qib theem ntawm kev txhawb nqa kev ua haujlwm, raws li tsab ntawv ceeb toom tias qhov kev txhim kho no txhawb nqa cov basal thiab cov ntaub so ntswg tshwj xeeb ntawm Cga gene.
Yuav ua li cas hloov cov ntaub ntawv txhawb nqa ua haujlwm?
Txhim kho yog kev tswj hwm deoxyribonucleic acid (DNA) ib ntus uas muab cov chaw khi rau cov proteins uas pab qhib cov ntawv sau (tsim ntawm ribonucleic acid [RNA] los ntawm DNA). Thaum cov proteins uas muaj qhov tshwj xeeb affinity rau DNA (DNA-binding protein) khi rau ib qho kev txhim kho, cov duab ntawm DNA hloov.
Pom zoo:
Rau hom kev txhim kho n-mosfet qhov pib voltage yog?
Kev piav qhia: Rau kev txhim kho hom n-MOSFET, qhov pib qhov hluav taws xob yog qhov muaj txiaj ntsig zoo . qhov ntsuas hluav taws xob hauv n MOSFET yog dab tsi? qhov ntsuas hluav taws xob yog qhov hluav taws xob siv nruab nrab ntawm lub rooj vag thiab qhov chaw ntawm MOSFET uas xav tau los tig lub cuab yeej rau cov kab thiab qhov chaw ua haujlwm saturation Kev tshuaj xyuas hauv qab no yog los txiav txim siab qhov pib voltage ntawm N-channel MOSFET (tseem hu ua N-MOS
Kev sau ntawv tuaj yeem txhim kho kev sau ntawv?
Tib neeg feem ntau xav tias kev sau ntawv thiab sau ntawv yog qhov sib txawv, tab sis lawv tsis yog. Feem ntau, calligraphy muaj xws li stylized, embellished ntawv - nws yog ntau kos duab tshaj sau ntawv, tiag tiag. … Txawm hais tias txhua leej txhua tus muaj lawv tus kheej tes sau ntawv, muaj ib txwm muaj chaw rau kev txhim kho!
Leej twg los txhim kho kev ua haujlwm ntawm pob zeb?
Yuav ua li cas txhawm rau txhim kho kev ua haujlwm ntawm pob zeb Npaj dej/cement ratio. Nyob qhov loj ntawm cov aggregate. Siv zoo sib npaug thiab du sib sau ua ke hloov tsis zoo. Nyob rau lub sijhawm sib tov. Nco qhov kub thiab txias.
Pob arthropods puas muaj kev txhim kho deuterostome?
Echinoderms uas yog cov hnub qub hiav txwv, hiav txwv dib thiab tag nrho cov vertebrates - tsiaj nrog cov pob txha, txhim kho txoj hauv kev no thiab yog deuterostomes. Feem ntau tag nrho invertebrates, suav nrog arthropods, yog protostomes.
Thaum twg yog kev txhim kho kho dua tshiab?
Qhov piv txwv tshaj plaws ntawm qhov kev txhim kho kho dua tshiab yog thaum lub tsev uas twb muaj lawm raug rhuav tshem kom lub tsev tshiab tuaj yeem tsim tau Txawm li cas los xij, kev txhim kho kuj tuaj yeem tshwm sim thaum lub tsev tam sim no lossis lub tsev.
