2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Messenger RNA (mRNA) nqa cov ntaub ntawv keeb kwm theej los ntawm DNA hauv daim ntawv ntawm cov lej ntawm peb lub hauv paus "cov lus," txhua yam uas qhia txog cov amino acid tshwj xeeb. 2. Hloov RNA (tRNA) yog tus yuam sij rau deciphering cov lus code hauv mRNA.
mRNA yog dab tsi thiab vim li cas nws tseem ceeb?
mRNA yog tseem ceeb raws li DNA . Messenger ribonucleuc acid, lossis mRNA luv luv, ua lub luag haujlwm tseem ceeb hauv tib neeg biology, tshwj xeeb hauv cov txheej txheem paub. raws li protein synthesis. mRNA yog ib qho molecule ib leeg uas nqa cov kab mob caj ces los ntawm DNA hauv lub xov tooj ntawm tes mus rau ribosomes, lub xov tooj ntawm tes ua cov khoom siv protein.
Lub luag haujlwm tseem ceeb ntawm mRNA yog dab tsi?
Tshwj xeeb, tus xa xov RNA (mRNA) nqa cov qauv ntawm cov protein los ntawm lub cell DNA mus rau nws cov ribosomes, uas yog "tshuab" uas tsav cov protein synthesis. Hloov RNA (tRNA) ces nqa cov amino acids tsim nyog rau hauv ribosome kom suav nrog hauv cov protein tshiab.
mRNA txhais li cas?
Ib hom RNA pom hauv cov hlwb. mRNA molecules nqa cov ntaub ntawv genetic xav tau los ua cov protein. Lawv nqa cov ntaub ntawv los ntawm DNA nyob rau hauv lub nucleus ntawm lub cell mus rau cytoplasm qhov twg cov proteins yog tsim. Kuj hu ua messenger RNA.
DNA thiab mRNA txawv li cas?
DNA yog tsim los ntawm deoxyribose qab zib thaum mRNA yog tsim los ntawm ribose qab zib. DNA muaj thymine ua ib qho ntawm ob pyrimidines thaum mRNANws muaj uracil raws li nws cov pyrimidines puag. DNA yog tam sim no nyob rau hauv lub nucleus thaum mRNA diffuses mus rau hauv lub cytoplasm tom qab synthesis. DNA yog ob-stranded thaum mRNA yog ib leeg-stranded.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Lub sijhawm xyoo 1920 lub hom phiaj ntawm lub tebchaws United States tariffs yog dab tsi?
Cov no tau raug cai, ib feem, kom txaus siab rau cov chaw xaiv tsa hauv tebchaws, tab sis thaum kawg lawv tau ua haujlwm los cuam tshuam kev lag luam thoob ntiaj teb kev koom tes thiab kev lag luam nyob rau xyoo 1920 thiab thaum ntxov 1930s.
Dab saib lub hom phiaj yog dab tsi?
Lub moos no muaj tshwm sim vim tias, txhawm rau cov neeg coob tig los ntawm txhua lub moos, yuav tsum muaj tus lej khib ntawm lub nkoj hnub. Kev faib ib lub moos hauv ib nrab tso cai rau cov neeg tsav nkoj sawv ntsug sib txawv saib tsis yog ib pab neeg raug yuam kom sawv nruab nrab saib txhua hmo.
Puas yog lub hom phiaj lossis lub hom phiaj?
Suab nrov yog cov khoom ntiag tugntawm lub suab uas hnov hloov pauv thaum lub amplitude hloov pauv thaum lub zaus nyob tas li. Pitch yog lub ntsiab lus ntawm lub suab uas tau hnov los hloov thaum lub zaus hloov pauv thaum lub amplitude nyob tas li.
Lub hom phiaj ntawm cov cheeb tsam uas tsis tau txhais utrs tam sim no ntawm mrna yog dab tsi?
Cov cheeb tsam uas tsis tau txhais lus (UTRs) hauv mRNA ua si lub luag haujlwm tseem ceeb ntawm kev tswj hwm kev ruaj ntseg, kev ua haujlwm, thiab thaj chaw ntawm mRNA. 3'-UTRs ntawm mRNA kuj tseem ua cov qauv rau miRNA khi uas tswj kev hloov pauv thiab / lossis kev ua haujlwm ntawm mRNA.
