Video: Koj paub qhov txawv DNA ntawm RNA li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj ob sib txawv uas paub qhov txawv DNA ntawm RNA : (a) RNA muaj cov suab thaj ribose, thaum DNA muaj cov suab thaj sib txawv me ntsis deoxyribose (ib hom ribose uas tsis muaj oxygen atom), thiab (b) RNA muaj cov nucleobase uracil thaum DNA muaj thymine.
Ib yam li ntawd, nws tau nug, 4 qhov sib txawv tseem ceeb ntawm DNA thiab RNA yog dab tsi?
DNA yog ib tug ntev polymer nrog deoxyriboses thiab phosphate qaum. Muaj plaub sib txawv nitrogenous hauv paus: adenine, guanine, cytosine thiab thymine. RNA yog ib tug polymer nrog ib tug ribose thiab phosphate qaum. Plaub sib txawv nitrogenous bases: adenine, guanine, cytosine, thiab uracil.
Ib yam li ntawd, cov nqe lus twg sib txawv DNA thiab RNA xyuas txhua qhov siv tau? Qhov 2 tiag nqe lus yog " DNA siv deoxyribose thiab RNA siv ribose" (qhia los ntawm thawj tsab ntawv ntawm txhua ) thiab " DNA muaj thymine thiab RNA muaj uracil" (uracil tsis pom nyob rau hauv DNA thiab thymine tsis pom nyob rau hauv RNA .)
Ntawm no, RNA thiab DNA zoo sib xws thiab txawv li cas?
RNA yog qee yam zoo sib xws rau DNA ; lawv ob leeg yog nucleic acids ntawm nitrogen-muaj hauv paus koom nrog qab zib-phosphate qaum qaum. Yuav ua li cas puas structural thiab functional sib txawv RNA los ntawm DNA . Tus qauv tsim, RNA yog ib leeg-stranded qhov twg as DNA yog ob txoj hlua khi. DNA muaj Thymine, qhov twg as RNA muaj Uracil.
Dab tsi yog 5 qhov sib txawv ntawm DNA thiab RNA?
DNA muaj cov suab thaj deoxyribose, thaum RNA muaj cov piam thaj ribose. DNA thiab RNA base pairing yog txawv me ntsis txij li thaum DNA siv lub hauv paus adenine, thymine, cytosine, thiab guanine; RNA siv adenine, uracil, cytosine, thiab guanine. Uracil txawv ntawm thymine vim tias nws tsis muaj methyl pawg ntawm nws lub nplhaib.
Pom zoo:
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