2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Purines ib txwm khi nrog pyrimidines ntawm hydrogen bonds ua raws li Chargaff Chargaff Chargaff cov cai hais tias DNA los ntawm txhua hom kab mob yuav tsum muaj1: 1 stoichiometric piv ntawm purine thiab pyrimidine bases(piv txwv li, A + G=T + C) thiab, tshwj xeeb tshaj yog, tias tus nqi ntawm guanine yuav tsum sib npaug rau cytosine thiab tus nqi ntawm adenine yuav tsum sib npaug rau thymine. https://en.wikipedia.org › wiki › Chargaff's_rules
Chargaff txoj cai - Wikipedia
txoj cai hauv dsDNA, tshwj xeeb tshaj yog txhua daim ntawv cog lus ua raws li Watson-Crick cov cai sib koom ua ke. Yog li ntawd adenine tshwj xeeb khi rau thymine tsim ob daim ntawv cog lus hydrogen, thaum guanine tsim peb daim ntawv cog lus hydrogen nrog Cytosine.
Yuav ua li cas khi cov purines thiab pyrimidines ua ke?
Purines thiab pyrimidines yog nitrogen hauv paus uas tuav DNA strands ua ke los ntawm hydrogen bonds. Lawv ua ke los ntawm kev sib koom ua ke raws li Chargaff Txoj Cai (A::T thiab G::C). Cov purines hauv DNA yog adenine thiab guanine, tib yam li hauv RNA.
Purines txuas rau dab tsi?
Nitrogenous bases tam sim no hauv DNA tuaj yeem muab faib ua ob pawg: purines (Adenine (A) thiab Guanine (G)), thiab pyrimidine (Cytosine (C) thiab Thymine (T)). Cov nitrogenous hauv paus no txuas nrog C1 'ntawm deoxyribose los ntawm glycosidic daim ntawv cog lus.
Puas purines nyiam rau pyrimidines?
Purine thiab Pyrimidine Pairing
InRNA, uracil (U) siv qhov chaw ntawm T. Yog li saib hla ib qho molecule, a purine ib txwm ua ke nrog pyrimidine, uas ua rau kev txiav txim siab vim qhov no ua rau txhua khub ntawm tib qhov loj..
Puas purines daim ntawv cog lus nrog purines?
Purines thiab pyrimidines yog khub hauv paus. Ob lub hauv paus feem ntau yog A-T thiab C-G. Cov nucleotides no yog ua tiav -lawv cov duab tso cai rau lawv ua ke nrog hydrogen bonds. Hauv C-G khub, purine (guanine) muaj peb qhov chaw sib txuas, thiab yog li pyrimidine (cytosine).
Pom zoo:
Nyob rau hauv daim ntawv cog lus cog lus cov pawnee hloov?
Kev cog lus Hauv kev cog lus, tus neeg txais nyiaj hloov pauv / tso nws cov khoom rau Pawnee raws li kev ruaj ntseg tiv thaiv tus nqi uas nws tau txais los ntawm Pawnee. Tus neeg txais nyiaj muaj lub luag haujlwm them tus nqi rov qab rau tus Pawnee thiab tus Pawnee muaj lub luag haujlwm rov qab cov khoom tom qab tus neeg txais nyiaj them tus nqi.
Puas yog daim ntawv cog lus tsis muaj tseeb ib yam li cov ntawv cog lus tsis muaj lawm?
Daim ntawv cog lus tsis muaj nuj nqis yog qhov kev pom zoo uas tsis muaj kev cai lij choj txhua yam vim muaj qee yam tsis xws luag. Nws suav tias tsis muaj thiab tsis muaj nyob txij thaum pib thiab tsis tuaj yeem pom zoo los ntawm txoj cai. Daim ntawv cog lus tsis zoo no yog qhov 'kev cog lus tsis muaj tseeb' vim tias 'kev cog lus' yuav tsum muaj txoj cai lij choj.
Puas yog daim ntawv cog lus yog daim ntawv cog lus siv tau?
Vim a daim ntawv cog lus tsis yog daim ntawv cog lus tseeb, kev lees paub ntawm kev sib nrig tsis tsim nyog, thiab lub tsev hais plaub yuav txiav txim siab yam tsis xav txog lub hom phiaj ntawm ob tog. Thaum ib tog foob rau kev puas tsuaj raws li daim ntawv cog lus, kev kho mob feem ntau yog rov qab los yog rov qab los raws li kev xav ntawm quantum meruit.
Daim ntawv cog lus pov hwm puas suav nrog lub npe ntawm cov ntawv pov hwm?
tshaj tawm ib feem ntawm daim ntawv tuav pov hwm tsheb daim ntawv cog lus pov hwm uas lub npe ntawm cov ntawv pov hwm, tsheb tsim thiab qauv, tsab cai pib thiab hnub kawg, nyiaj pov hwm, thiab lwm yam. Daim ntawv cog lus pov hwm - hais tias dab tsi nws yog tus neeg tuav pov hwm pom zoo raws li cov lus cog tseg.
Puas yog daim ntawv cog lus tom qab kev cog lus hauv California?
Tsuav koj qhov kev pom zoo ua tiav California txoj cai lij choj, cov tsev hais plaub yuav txiav txim siab tias nws siv tau txawm tias koj tau sib yuav ntev npaum li cas. Qhov tseeb, kev cog lus tom qab yug me nyuam yog feem ntau ntawm cov niam txiv uas tau sib yuav tau ntau xyoo, raws li lawv nkag siab zoo dua qhov ntau npaum li cas txhua tog tau nce lossis poob.
