2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Activator proteins khi rau cov chaw tswj hwm ntawm DNA nyob ze rau cov cheeb tsam txhawb nqa uas ua raws li kev hloov pauv. Qhov kev sib khi no ua kom yooj yim rau RNA polymerase kev ua haujlwm thiab kev hloov pauv ntawm cov noob nyob ze.
Cov activators thiab cov neeg tawm tsam khi nyob qhov twg?
DNA ntu nyob ze ntawm tus txhawb nqaua haujlwm raws li cov chaw sib txuas cov protein-feem ntau ntawm cov chaw no yog cov neeg ua haujlwm-rau cov kev tswj hwm cov proteins hu ua activators thiab repressors. Rau qee cov noob caj noob ces, kev khi ntawm cov protein activator rau nws lub hom phiaj DNA qhov chaw yog qhov tsim nyog yuav tsum tau ua ua ntej rau kev sau npe pib.
tus activator khi rau qhov twg?
Feem ntau cov activators khi rau cov grooves loj ntawm ob lub helix, raws li cov cheeb tsam no yuav dav dua, tab sis muaj qee qhov yuav khi rau cov grooves me. Activator-binding sites tej zaum yuav nyob ze rau tus neeg txhawb nqa lossis ntau lub hauv paus khub deb.
Tus activator protein khi rau dab tsi?
Cov khoom ntawm cov protein ua kom muaj zog: DNA binding domain (uas txuas rau qhov chaw lees paub hauv DNA) thiab qhov ua kom ua haujlwm, uas yog "kev lag luam kawg" ntawm tus activator uas yeej txhawb kev sau ntawv, piv txwv li, los ntawm kev yooj yim tsim ntawm qhov kev pib ua haujlwm.
Qhov twg yuav tus activator khi rau qhov operon no?
Ib tus activator khi nyob rau hauv cheeb tsam tswj hwm ntawm tus operon, pab RNA polymerase khi rau tus txhawb nqa, yog litxhim kho qhov kev hloov pauv ntawm qhov operon no. Ib qho inducer cuam tshuam rau kev sau ntawv los ntawm kev cuam tshuam nrog tus neeg tawm tsam lossis activator. Lub trp operon yog ib qho piv txwv classic ntawm lub repressible operon.
Pom zoo:
Tus dej toccoa nyob rau hauv georgia nyob qhov twg?
Tus Dej Toccoa yog ib qho ntawm North Georgia tus dej txias tshaj plaws. Nws pib nce siab hauv roob ntawm Union County thiab ntws mus rau sab hnub poob rau hauv Blue Ridge Lake tig mus rau sab qaum teb mus rau McCaysville thiab mus rau Tennessee.
Tus tub xa ntawv nyob rau hauv dalaran nyob qhov twg?
Qhov chaw xa ntawv pom qab khw muag khoom hauv Dalaran. Koj nyem rau ntawm cov yeeb nkab mus rau hauv av. Lub chaw xa ntawv nyob qhov twg? Lub Chaw Ua Haujlwm Tus Thawj Kav Tebchaws yog qhov chaw nyob hauv Dalaran, uas nkag mus tau los ntawm Xa Ntawv Tube.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
