Video: RNA txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum transcription, lub RNA polymerase nyeem cov qauv DNA strand hauv 3' → 5' kev taw qhia , tab sis mRNA yog tsim nyob rau hauv lub 5' rau 3' kev taw qhia . mRNA yog ib leeg-stranded thiab yog li ntawd tsuas muaj peb lub peev xwm nyeem ntawv, uas tsuas yog ib qho xwb txhais.
Ib yam li ntawd, qhov kev taw qhia dab tsi yog RNA synthesized?
Kev sau los ntawm RNA polymerase. Ib RNA strand yog ua ke 5' → 3' kev taw qhia los ntawm ib cheeb tsam ib leeg tso tseg ntawm DNA.
Tsis tas li ntawd, puas yog mRNA transcribed 5 mus rau 3? Lub ntsiab enzyme koom nrog kev sau ntawv yog RNA polymerase, uas siv ib leeg-stranded DNA qauv los ua ke ib qho ntxiv ntawm RNA. Tshwj xeeb, RNA polymerase tsim RNA strand nyob rau hauv 5' rau 3 ' kev taw qhia, ntxiv txhua nucleotide tshiab rau lub 3 ' kawg ntawm txoj hlua.
Ntawm no, txoj kev txhais lus twg tshwm sim?
1 Teb. Kev sau ntawv tshwm sim nyob rau hauv lub nucleus, whereas kev txhais lus tshwm sim hauv cytoplasm.
RNA nyob qhov twg?
Deoxyribonucleic acid (nrog rau DNA ) feem ntau pom nyob rau hauv lub nucleus ntawm cell , thaum Ribonucleic Acid (RNA) feem ntau pom muaj nyob hauv cytoplasm ntawm cell txawm hais tias nws yog feem ntau synthesized nyob rau hauv lub nucleus.
Pom zoo:
Koj txhais qhov hnyav txhais li cas?
Cov ntsiab lus. Weighted Mean: Ib qho txhais tau tias qee qhov txiaj ntsig pab ntau dua li lwm tus. Thaum qhov hnyav ntxiv rau 1: tsuas yog muab txhua qhov hnyav los ntawm tus nqi sib xws thiab suav tag nrho. Txwv tsis pub, muab txhua qhov hnyav w los ntawm nws qhov sib piv tus nqi x, suav tias tag nrho, thiab faib los ntawm qhov sib npaug ntawm qhov hnyav: Qhov Ntsuas Ntsuas = ΣwxΣw
Cov ntsiab lus hydrophilic thiab hydrophobic txhais li cas thiab lawv cuam tshuam li cas?
Hydrophobic txhais tau hais tias cov molecule yog "ntshai" dej. Cov tails ntawm phospholipid yog hydrophobic, txhais tau tias lawv nyob hauv daim nyias nyias. Hydrophilic txhais tau hais tias cov molecule muaj affinity rau dej
Nws txhais li cas rau synthesize RNA?
RNA synthesis (tseem hu ua transcription) yog tsim los ntawm RNA molecule los ntawm nucleotides adenine (A), cytosine (C), guanine (G), los yog uracil (U). Cov nucleotides tau koom ua ke los ntawm enzyme RNA Polymerase (pom ntsuab hauv qab)
Koj txhais li cas los ntawm lo lus txhais?
Lub ntsiab lus txhais yog ib nqe lus ntawm lub ntsiab lus ntawm ib lo lus (ib lo lus, kab lus, lossis lwm yam cim). Cov lus txhais tau muab faib ua ob pawg loj, cov ntsiab lus tsis txaus ntseeg (uas sim muab lub ntsiab lus ntawm lub ntsiab lus) thiab cov ntsiab lus txuas ntxiv (uas sim sau cov khoom uas ib lo lus piav qhia)
Txhais tau li cas los txhais ib daim duab peb sab?
Kev txhais lus. Kev txhais lus yog ib qho kev hloov pauv uas tshwm sim thaum ib daim duab tau txav los ntawm ib qho chaw mus rau lwm qhov chaw yam tsis tau hloov nws qhov loj, duab lossis kev taw qhia. Txhawm rau txhais cov ntsiab lus P (x, y), ib chav nyob sab xis thiab b units, siv P'(x + a, y + b)