Video: Dab tsi yog qhov txawv ntawm cov piam thaj hauv DNA thiab RNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
DNA muaj cov qab zib deoxyribose, thaum RNA muaj cov qab zib ribose. Lub xwb qhov sib txawv ntawm ribose thiab deoxyribose yog tias ribose muaj ib pawg -OH ntau dua li deoxyribose, uas muaj -H txuas rau qhov thib ob (2') carbon hauv nplhaib. DNA yog ob-stranded molecule, thaum RNA yog ib leeg-stranded molecule.
Raws li, 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.
Tom qab ntawd, lo lus nug yog, dab tsi yog piam thaj hauv RNA? ribose
Ib yam li ntawd, tib neeg nug, peb qhov sib txawv ntawm DNA thiab RNA yog dab tsi?
DNA yog ob-stranded, thaum RNA yog ib leeg-stranded. RNA muaj ribose li qab zib, thaum DNA muaj deoxyribose. Tsis tas li ntawd, peb ntawm cov nitrogenous hauv paus yog tib yam nyob rau hauv ob hom (adenine, cytosine, thiab guanine), tab sis DNA muaj thymine thaum RNA muaj uracil.
DNA thiab RNA muaj pes tsawg leeg?
DNA muaj ob strands teem nyob rau hauv ib ob helix. RNA muaj ib qho strand. DNA (deoxyribonucleic acid) muaj ib tug txha caj qaum ntawm alternating deoxyribose thiab phosphate pawg.
Pom zoo:
Cov piam thaj hauv RNA txawv li cas ntawm cov piam thaj hauv DNA?
DNA muaj cov piam thaj deoxyribose, thaum RNA muaj cov piam thaj ribose. Qhov sib txawv ntawm ribose thiab deoxyribose nkaus xwb yog tias ribose muaj ib pawg -OH ntau dua li deoxyribose, uas muaj -H txuas rau qhov thib ob (2') carbon hauv lub nplhaib. DNA yog ob-stranded molecule, thaum RNA yog ib leeg-stranded molecule
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