Video: Yuav ua li cas unwinds DNA nyob rau hauv protein synthesis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev sau ntawv. Transcription yog tus txheej txheem uas DNA yog theej (transcribed) rau mRNA, uas nqa cov ntaub ntawv xav tau rau protein synthesis . Kev hloov pauv yuav tshwm sim hauv ob kauj ruam dav. Ua ntej, ua ntej tus tub txib RNA yog tsim, nrog rau kev koom tes ntawm RNA polymerase enzymes.
Xav txog qhov no, dab tsi unzips DNA hauv protein synthesis?
Lub helicase unzips lub ob-stranded DNA rau replication, ua ib tug forked qauv.
Ib yam li ntawd, dab tsi ua rau DNA hauv kev sau ntawv? Cov kauj ruam ntawm Kev sau ntawv Nws tshwm sim thaum lub enzyme RNA polymerase khi rau thaj tsam ntawm cov noob hu ua tus txhawb nqa. Qhov no signals lub DNA rau tso siab yog li cov enzyme tuaj yeem 'nyeem' cov hauv paus hauv ib qho ntawm DNA strands. Lub enzyme tam sim no tau npaj los ua ib txoj hlua ntawm mRNA nrog kev sib txuas ua ke ntawm cov hauv paus.
Tsis tas li lo lus nug yog, DNA koom nrog hauv kev tsim cov protein li cas?
DNA ua RNA ua Protein . Cov synthesis ntawm cov proteins tshwm sim nyob rau hauv ob theem ua ke: Transcription thiab Translation. Transcription tshwm sim nyob rau hauv lub cell nucleus thiab siv lub hauv paus ib theem zuj zus ntawm DNA tsim mRNA. Lub mRNA nqa cov lus los ua ib qho tshwj xeeb protein ntau tawm mus rau cytoplasm qhov twg kev txhais lus tshwm sim.
Thawj kauj ruam ntawm cov protein synthesis yog dab tsi?
STEP 1: Cov thawj kauj ruam hauv protein synthesis yog kev hloov pauv ntawm mRNA los ntawm DNA gene hauv lub nucleus. Qee lub sij hawm ua ntej, ntau hom RNA tau raug tsim los siv DNA tsim nyog. RNAs tsiv tawm ntawm lub nucleus mus rau hauv cytoplasm.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Yuav ua li cas resistors coj nyob rau hauv series thiab nyob rau hauv parallel?
Txhua tus resistor nyob rau hauv ib tug series Circuit Court muaj tib tus nqi ntawm tam sim no ntws los ntawm nws. Txhua tus resistor nyob rau hauv ib qho hluav taws xob sib txuas muaj tib qhov hluav taws xob tag nrho ntawm qhov siv rau nws. Qhov tam sim no ntws los ntawm txhua tus resistor nyob rau hauv ib qho kev sib txuas sib txuas sib txawv, nyob ntawm qhov tsis kam
Yuav ua li cas tshwm sim nyob rau hauv synthesis theem?
S theem, los yog synthesis, yog theem ntawm lub voj voog ntawm tes thaum DNA ntim rau hauv chromosomes replicated. Qhov kev tshwm sim no yog ib qho tseem ceeb ntawm lub voj voog ntawm tes vim tias kev rov ua dua tso cai rau txhua lub cell tsim los ntawm kev faib cell kom muaj tib yam caj ces tsim
Yog vim li cas transcription yog ib kauj ruam tsim nyog nyob rau hauv protein synthesis?
Lub Art ntawm Protein Synthesis Nyob rau hauv eukaryotic hlwb, transcription tshwm sim nyob rau hauv lub nucleus. Thaum lub sijhawm sau ntawv, DNA yog siv los ua tus qauv los ua ib qho molecule of messenger RNA (mRNA). Thaum lub sij hawm kev txhais lus, cov noob caj noob ces hauv mRNA yog nyeem thiab siv los ua cov protein
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