Video: Kev txhais lus hauv DNA tshwm sim qhov twg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau hauv ib tug prokaryotic cell, transcription thiab txhais lus ua ke; uas yog, txhais lus pib thaum mRNA tseem tab tom ua ke. Nyob rau hauv ib tug eukaryotic cell, transcription tshwm sim nyob rau hauv lub nucleus, thiab kev txhais lus tshwm sim hauv cytoplasm.
Ntxiv mus, dab tsi yog kev txhais lus hauv DNA?
Kev txhais lus yog tus txheej txheem uas siv cov ntaub ntawv dhau los ntawm DNA raws li tus tub txib RNA thiab hloov nws mus rau hauv cov amino acids ua ke nrog peptide bonds. Lub ribosome yog qhov chaw ntawm qhov kev ua no, ib yam li RNA polymerase yog qhov chaw ntawm mRNA synthesis.
Tsis tas li ntawd, yuav ua li cas thaum txhais lus? Kev txhais lus yog cov txheej txheem uas cov protein yog tsim los ntawm cov ntaub ntawv muaj nyob rau hauv ib tug molecule ntawm messenger RNA (mRNA). Kev txhais lus tshwm sim nyob rau hauv ib tug qauv hu ua lub ribosome, uas yog lub Hoobkas rau synthesis ntawm cov proteins.
Tom qab ntawd, qhov twg hauv lub xov tooj ntawm tes txhais lus tshwm sim?
Teb thiab piav qhia: Kev txhais lus yog hloov pauv cov ntaub ntawv los ntawm mRNA (uas yog transcribed los ntawm DNA nyob rau hauv lub nucleus) rau cov amino acid sequences. Kev txhais lus tshwm sim nyob rau hauv lub cytoplasm cell . Nws xav tau mRNA sequences, Ribosomes thiab tRNAs.
DNA txhais li cas rau mRNA?
Kev sau ntawv. Transcription yog tus txheej txheem uas DNA yog theej (transcribed) rau mRNA , uas nqa cov ntaub ntawv xav tau rau cov protein synthesis. Tus tub txib ua ntej RNA yog tom qab ntawd "kho" los tsim qhov xav tau mRNA molecule hauv tus txheej txheem hu ua RNA splicing.
Pom zoo:
Qhov twg tshwm sim thawj lub teeb nyob ntawm qhov tshwm sim lossis lub teeb ywj pheej?
Lub Teeb-Dependent thiab Lub Teeb-Independent Reactions. Cov tshuaj tiv thaiv lub teeb, lossis cov tshuaj tiv thaiv lub teeb-dependent, yog thawj zaug. Peb hu lawv ob leeg thiab ob lub npe. Nyob rau hauv lub teeb-dependent tshwm sim ntawm photosynthesis, lub zog ntawm lub teeb propels lub electrons los ntawm ib tug photosystem mus rau lub high-zog lub xeev
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Dab tsi tshwm sim hauv kev txhais lus ntawm DNA?
Kev txhais lus yog cov txheej txheem uas siv cov ntaub ntawv dhau los ntawm DNA ua tus xa xov RNA thiab hloov mus rau hauv cov amino acids ua ke nrog peptide bonds. Lub ribosome txav raws mRNA, txuam 3 lub hauv paus khub ntawm ib lub sij hawm thiab ntxiv cov amino acids rau cov saw polypeptide
Kev txhais lus tshwm sim qhov twg?
Nyob rau hauv ib lub cell prokaryotic, transcription thiab txhais lus yog ua ke; uas yog, kev txhais lus pib thaum lub mRNA tseem tab tom ua ke. Hauv eukaryotic cell, transcription tshwm sim hauv lub nucleus, thiab kev txhais lus tshwm sim hauv cytoplasm
Qhov txheej twg yog huab cua tshwm sim feem ntau tshwm sim?
Troposphere. Lub troposphere (los ntawm Greek: tropein - hloov, ncig lossis sib xyaw) yog txheej qis tshaj plaws ntawm lub ntiaj teb huab cua. Feem ntau ntawm huab cua phenomena, systems, convection, turbulence thiab huab tshwm sim nyob rau hauv no txheej, tab sis tej zaum yuav mus rau hauv lub qis feem ntawm thestratosphere