2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Messenger RNA (mRNA) molecules nqa cov coding sequences rau protein synthesis thiab hu ua transcripts; ribosomal RNA (rRNA) molecules tsim lub hauv paus ntawm lub cell ribosomes (cov qauv uas muaj protein ntau synthesis tshwm sim); thiab hloov RNA (tRNA) molecules nqa cov amino acids mus rau ribosomes thaum lub sij hawm protein …
Tus tub txib RNA ua li cas thaum lub sij hawm sib txuas lus protein?
Messenger RNA, thaum lub sij hawm tsim cov protein, luam cov lus coded los ntawm DNA thiab nqa mus rau hauv cytoplasm. nqa cov amino acids thiab ntxiv rau cov protein uas loj tuaj.
RNA pab hauv kev tsim cov protein li cas?
Messenger RNA muab cov ribosome nrog cov qauv tsim rau cov proteins. … Amino acids yog lub tsev thaiv cov proteins. Txhua amino acid nyob rau hauv ib tug protein yog xa mus rau lub ribosome los ntawm lwm yam RNA: hloov RNA (tRNA).
tus tub txib RNA mus ua cov protein nyob qhov twg?
Tus txheej txheem ntawm kev ua mRNA los ntawm DNA yog hu ua transcription, thiab nws tshwm sim nyob rau hauv lub nucleus. mRNA tswj cov synthesis ntawm cov protein, uas tshwm sim nyob rau hauv the cytoplasm. mRNA tsim nyob rau hauv lub nucleus yog thauj tawm ntawm lub nucleus thiab mus rau hauv lub cytoplasm uas nws txuas mus rau lub ribosomes.
theem ntawm cov protein synthesis yog mRNA koom nrog?
Thaum transcription, DNA yog siv los ua tus qauv los ua cov molecule ntawm messenger RNA (mRNA). Cov molecule ntawm mRNA ces tawm ntawm lub nucleus thiab mus rau ib tug ribosome nyob rau hauv lub cytoplasm, qhov chaw txhais lus tshwm sim. Thaum lub sij hawm txhais lus, cov caj ces hauv mRNA tau nyeem thiab siv los ua cov protein.
Pom zoo:
Nyob rau hauv angiosperms pollen yog tsim nyob rau hauv anthers ib feem ntawm?
Nyob rau hauv angiosperms, paj ntoos yog tsim los ntawm anthers ntawm the stamens hauv paj. Hauv gymnosperms, nws yog tsim nyob rau hauv microsporophylls ntawm microstrobili (txiv neej paj ntoos cones). Pollen muaj ib los yog ntau tshaj cov noob qoob loo thiab ib lub qe qe.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Nyob rau hauv vernalisation flowering nyob rau hauv cov nroj tsuag yog?
Vernalization (los ntawm Latin vernus, "ntawm lub caij nplooj ntoos hlav") yoginduction ntawm cov nroj tsuag flowering txheej txheem los ntawm raug rau lub caij txias ntawm lub caij ntuj no, los yog los ntawm ib qho khoom sib npaug.
Nyob rau hauv alkaptonuria lub enzyme uas tsis yog synthesis?
In alkaptonuria, HGD enzyme tsis tuaj yeem metabolize homogentisic acid (tsim los ntawm tyrosine) rau hauv 4-maleylacetoacetate, thiab homogentisic acid theem hauv cov ntshav yog 100-fold siab dua li qhov xav tau. ib txwm xav tau, txawm tias muaj ntau npaum li cas raug tshem tawm mus rau hauv cov zis los ntawm lub raum.
Leej twg detering nyob rau hauv tag nrho cov nyob ntsiag to nyob rau sab hnub poob pem hauv ntej?
Detering yog tus neeg ua liaj ua teb los ntawm Txhua Tus Neeg Tsis Txaus Siabntawm Sab Hnub Poob los ntawm Erich Maria Remarque. Nws muaj siab mos siab muag, tshwj xeeb tshaj yog thaum nws los txog rau nees. Nws muaj kev kub ntxhov loj heev thaum nws hnov cov nees quaj thiab txawm sim tua lawv kom kawg lawv txoj kev txom nyem.
