2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Txoj cai ntawm kev sib koom ua ke (lossis nucleotide pairing) yog: A nrog T: cov purine adenine (A) ib txwm ua khub nrog pyrimidine thymine (T) C nrog G: cov pyrimidine cytosine (C) ib txwm ua khub nrog purine guanine (G)
Puas tau ob lub hauv paus purine ua khub ua ke?
Ob purines thiab ob pyrimidines ua ke tsuas yog siv ntau qhov chaw kom haum rau qhov chaw nruab nrab ntawm ob txoj hlua. … Cov khub uas tuaj yeem tsim cov ntawv cog lus hydrogen hauv qhov chaw ntawd yog adenine nrog thymine thiab cytosine nrog guanine. A thiab T tsim ob daim ntawv cog lus hydrogen thaum C thiab G tsim peb.
Yuav ua li cas yog tias ib qho purine ua ke nrog lwm tus purine?
Yog li ntawd, thaum ua khub hauv DNA, ob purines tsis tuaj yeem ua ke ua ke vim tias muajtsis muaj chaw txaus txaus ntawm ob DNA helical strands kom haum rau ob pawg purine, thiab yog li FOUR RINGS. Li no thaum DNA ua khub, ib qho purine ib txwm ua ke nrog pyrimidine.
Vim li cas purines tsis ua ke nrog purines?
Chargaff txoj cai hais tias, paj khub tsuas yog ua tau ntawm purine thiab pyrimidinehauv DNA ob lub helix. Tsis muaj purine-purine lossis pyrimidine-pyrimidine puag paring ua tau hauv DNA. Purines yog lub hauv paus loj nitrogenous vim yog ob lub nplhaib nitrogen hauv lawv cov qauv.
Puas purines ib txwm ua khub nrog lwm cov purines?
Vim purines ib txwm khi nrog pyrimidines - paub tias yogcomplementary pairing - qhov piv ntawm ob yuav ib txwm nyob tas mus li hauv DNA molecule. Nyob rau hauv lwm yam lus, ib tug strand ntawm DNA yuav yeej ib txwm yog ib tug meej ntxiv ntawm lwm yam kom deb li deb purines thiab pyrimidines mus.
Pom zoo:
Cov leeg twg koom nrog hauv lub hauv caug flexion?
Flexion yog ua los ntawm hamstrings thiab biceps femoris biceps femoris Function. Ob lub taub hau ntawm biceps femoris ua lub hauv caug flexion. Txij li thaum lub taub hau ntev pib nyob rau hauv lub pelvis nws yog koom nyob rau hauv lub hip extension.
Lub sijhawm cov leeg nqaij leeg lub zog yog muab los ntawm?
Lub hauv paus ntawm lub zog uas siv los ua lub zog txav ntawm kev sib cog lus hauv cov leeg ua haujlwm yog adenosine triphosphate (ATP)- lub cev txoj kev biochemical khaws cia thiab thauj lub zog. Yuav ua li cas muab lub zog rau cov leeg nqaij?
Puas yog lub plawv cov leeg leeg zoo li?
Cov leeg mob plawv nyob hauv cov phab ntsa ntawm lub plawv, tshwm sim striated, thiab nyob rau hauv kev tswj tsis tau. Cov leeg nqaij du yog nyob rau hauv cov phab ntsa ntawm cov hlab ntsha ntawm lub cev, tshwj tsis yog lub plawv, tshwm spindle-puab, thiab tseem nyob rau hauv kev tswj tsis tau.
Puas purines suav nrog adenine thiab thymine?
Purines thiab Pyrimidines yog cov hauv paus nitrogenous uas ua rau ob hom nucleotide hauv paus hauv DNA thiab RNA. Ob-carbon nitrogen nplhaib hauv paus (adenine thiab guanine) yog purines, thaum ib-carbon nitrogen nplhaib hauv paus (thymine thiab cytosine) yog pyrimidines.
Leej twg ua purines daim ntawv cog lus nrog pyrimidines?
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.
