Cov txheej txheem:
Video: Plaub kauj ruam ntawm kev sau ntawv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Transcription muaj plaub theem:
- Kev pib . Lub DNA molecule unwinds thiab sib cais los tsim ib tug me me qhib complex.
- Elongation . RNA polymerase txav raws tus qauv strand, synthesising ib mRNA molecule.
- Kev txiav txim . Hauv prokaryotes muaj ob txoj hauv kev uas tau txiav tawm.
- Kev ua haujlwm .
Xav txog qhov no, dab tsi yog cov kauj ruam tseem ceeb ntawm kev sau ntawv?
Transcription yuav siv sij hawm qhov chaw nyob rau hauv peb kauj ruam: pib , elongation , thiab kev txiav txim . Cov kauj ruam tau piav qhia hauv daim duab hauv qab no. Kev pib yog qhov pib ntawm transcription. Nws tshwm sim thaum lub enzyme RNA polymerase khi rau thaj tsam ntawm cov noob hu ua tus txhawb nqa.
Tsis tas li ntawd, tus txheej txheem ntawm kev sau thiab txhais lus yog dab tsi? Central Dogma ntawm Molecular Biology hais tias DNA ua RNA ua cov proteins (Daim duab 1). Cov txheej txheem uas DNA tau theej rau RNA hu ua kev sau ntawv , thiab qhov uas RNA siv los tsim cov proteins hu ua txhais lus.
Tsis tas li ntawd, dab tsi yog cov kauj ruam ntawm transcription quizlet?
Cov ntsiab lus hauv cov teeb no (3)
- Thawj kauj ruam. RNA polymerase unzips DNA ob helix (pib)
- Kauj ruam thib ob. RNA Nucleotides yog tsim los ntawm nucleotides hauv DNA template strand (Elongation)
- Kauj ruam peb. Lub mRNA uas yog tsim tawm ntawm lub nucleous (kev txiav tawm)
Yuav ua li cas tshwm sim nyob rau hauv tus txheej txheem transcription?
Kev hloov pauv yuav tshwm sim nyob rau hauv lub nucleus. Nws siv DNA ua tus qauv los ua RNA molecule. RNA ces tawm ntawm lub nucleus thiab mus rau ib tug ribosome nyob rau hauv lub cytoplasm, qhov twg txhais tshwm sim . Kev txhais lus nyeem cov noob caj noob ces hauv mRNA thiab ua rau cov protein.
Pom zoo:
Thawj kauj ruam hauv kev sau ntawv yog dab tsi?
Thawj kauj ruam ntawm kev sau ntawv yog hu ua pre-initiation. RNA polymerase thiab cofactors (generaltranscription yam) khi rau DNA thiab unwind nws, tsim ib tug pib npuas. Qhov chaw no muab RNA polymerase nkag mus rau asingle strand ntawm DNA molecule
Dab tsi yog cov kauj ruam los daws qhov tsis sib xws ntawm ob kauj ruam?
Nws yuav siv ob kauj ruam los daws qhov kev sib npaug lossis qhov tsis sib xws uas muaj ntau tshaj ib qho kev ua haujlwm: Simplify siv qhov sib txawv ntawm qhov sib ntxiv lossis rho tawm. Ua kom yooj yim ntxiv los ntawm kev siv qhov sib txawv ntawm qhov sib npaug lossis faib
Plaub kauj ruam ntawm kev taw qhia ntawm tes yog dab tsi?
Nws suav nrog cov theem ntawm kev taw qhia ntawm tes (kev txais tos, hloov pauv, thiab cov lus teb) thiab ntau hom kev taw qhia suav nrog autocrine, paracrine, thiab endocrine
Qhov twg ntawm cov plaub hau plaub hau yog ib txwm plaub hau plaub hau?
square Tsis tas li ntawd nug, qhov ntsuas ntawm ib lub quadrilateral tsis tu ncua yog dab tsi? Yog, sab hauv lub kaum sab xis ntawm txhua lub ces kaum ntawm ib lub quadrilateral tsis tu ncua yog txhua 90 degrees (360 degrees / 4 fab).
Dab tsi yog cov kauj ruam rau kev sau ntawv?
Transcription yuav siv sij hawm qhov chaw nyob rau hauv peb kauj ruam: pib, elongation, thiab termination. Cov kauj ruam tau piav qhia hauv daim duab hauv qab no. Initiation yog qhov pib ntawm transcription. Nws tshwm sim thaum lub enzyme RNA polymerase khi rau thaj tsam ntawm cov noob hu ua tus txhawb nqa