Cov txheej txheem:
- DNA hu ua dab tsi?
- DNA hu ua dab tsi?
- YPuas yog chromosome ib leeg ntawm DNA?
- YPuas yog ib leeg-stranded DNA lossis RNA?
Video: Dna hu ua dab tsi?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Nyob rau hauv ob qho tib si, replication tshwm sim sai heev vim ntau yam polymerases tuaj yeem ua ke ob txoj hlua tshiab nyob rau tib lub sijhawm los ntawm kev siv txhua qhov tsis muaj kab mob los ntawm thawj DNA ob chav helix ua tus qauv. Ib tug ntawm cov thawj strands yog hu ua tus thawj strand, where the other is called the lagging strand.
DNA hu ua dab tsi?
Lub ob lub helix yog ib qho kev piav qhia ntawm cov duab molecular ntawm ob-stranded DNA molecule. Xyoo 1953, Francis Crick thiab James Watson tau piav qhia txog cov qauv molecular ntawm DNA, uas lawv hu ua "ob chav helix," hauv phau ntawv journal Nature.
DNA hu ua dab tsi?
Kom haum rau hauv cov hlwb, DNA yog coiled nruj nreem tsim cov qauv hu ua chromosomes. Txhua chromosome muaj ib qho DNA molecule. Tib neeg muaj 23 khub ntawm chromosomes, uas pom nyob rau hauv txhua lub cell lub nucleus.
YPuas yog chromosome ib leeg ntawm DNA?
Txhua tus chromosome muaj ib zaug ob zaug ntawm DNA nrog rau cov khoom ntim tau hais tseg. … Daim ntawv condensed no yog kwv yees li 10,000 lub sij hawm luv dua li cov kab DNA strand yog tias nws tsis muaj cov proteins thiab rub taut.
YPuas yog ib leeg-stranded DNA lossis RNA?
Tsis zoo li ob-kab DNA, RNA yog ib leeg-stranded moleculehauv ntau yam ntawm nws txoj haujlwm lom neeg thiab muaj ntau txoj hlua luv ntawm nucleotides. Txawm li cas los xij, ib qho RNA molecule tuaj yeem, los ntawm kev sib koom ua ke ua ke, tsim intrastrand ob helixes, xws li hauv tRNA.
Pom zoo:
Dab tsi yog bayeux tapestry dab tsi yog qhov cuam tshuam ntawm qhov kev tshwm sim nws ua kev nco txog?
Kristine Tanton. Ntsuas nees nkaum ntiv tes siab thiab yuav luag 230 ko taw ntev, Bayeux Tapestry ua kev nco txog kev tawm tsam rau lub zwm txwv ntawm Askiv ntawm William, Duke of Normandy, thiab Harold, Earl ntawm Wessex(Normandy yog ib cheeb tsam nyob rau sab qaum teb Fabkis).
Dab tsi yog dab tsi raug kaw?
Deadlocked: Dab ntxwg nyoog. Deadlocked yog qhov nyuaj tshaj plaws los qhib rau ib qho laj thawj: nws nyuaj. Los ntawm ob qho tib si kev taw qhia kev taw qhia thiab ib qho kev cim cim, nws nyuaj rau ob qho tib si spectrums . Puas yog Deadlocked dab insane?
Dab tsi yog ua dab tsi?
Donegal nto moo rau dab tsi? Donegal paub txog nws wild, rugged kev zoo nkauj, nrog rau Bundoran - lub nroog surfing ntawm Ireland. Lwm qhov pom kev txaus siab suav nrog Slieve League Cliffs thiab Wild Atlantic Way ntug dej hiav txwv . Donegal tshwj xeeb yog dab tsi?
Moonblink nyob rau hauv dab tsi yog dab tsi?
Muaj ib yam mob hu ua nyctalopia, tseem hu ua lub hli ntsais, uas yog qhov tsis muaj peev xwm pom hauv qhov tsaus ntuj. Tab sis qhov ntawd tshwm sim vim qhov tsis muaj vitamin A . Vim li cas lub hli ntsais? Thaum qhov chaw txav mus, gases uas cuam tshuam lub hnub tuaj yeem khiav tawm ntawm lub hli sab hauvQhov no yuav piav qhia txog qhov tshwm sim luminous, qee qhov uas nyob ntev li teev.
Dab tsi yog qhov dej dab dej ua dab tsi?
Scout piav qhia tias Maycomb nyob nees nkaum mais hauv av los ntawm Finch's Landing vim Sinkfield, tus tswv tsev noj mov uas muag cov mos txwv rau cov neeg Khab thiab cov neeg nyob, cov neeg soj ntsuam tsis txaus ntseeg los tsim Maycomb lub rooj zaum ntawm tsoomfwv ncig nws tavern .
