Video: Dab tsi yog pom hauv DNA nucleotide?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
DNA yog tsim los ntawm molecules hu ua nucleotides . Txhua nucleotide muaj ib pawg phosphate, ib pawg suab thaj thiab nitrogen hauv paus. Plaub hom nitrogen hauv paus yog adenine (A), thymine (T), guanine (G) thiab cytosine (C). Qhov kev txiav txim ntawm cov hauv paus no yog qhov txiav txim siab DNA cov cov lus qhia, los yog genetic code.
Raws li txoj cai, nucleotides hauv DNA yog dab tsi?
Cov nucleotide hauv DNA muaj cov suab thaj (deoxyribose), ib qho ntawm plaub lub hauv paus (cytosine (C), thymine (T), adenine (A), guanine (G)), thiab phosphate. Cytosine thiab thymine yog pyrimidine hauv paus, thaum adenine thiab guanine yog purine hauv paus. Cov suab thaj thiab lub hauv paus ua ke yog hu ua nucleoside.
Qhov thib ob, peb feem ntawm DNA nucleotide yog dab tsi? Ob leeg deoxyribonucleic acid (DNA) thiab ribonucleic acid (RNA) yog tsim los ntawm nucleotides uas muaj peb ntu:
- Nitrogenous Base. Purines thiab pyrimidines yog ob pawg ntawm nitrogenous hauv paus.
- Pentos Qab Zib. Hauv DNA, cov piam thaj yog 2'-deoxyribose.
- Phosphate Group. Ib pawg phosphate yog PO43-.
Hais txog qhov no, qhov twg muaj nucleotide pom hauv DNA?
Nucleotide A nucleotide muaj cov piam thaj molecule (xws li ribose hauv RNA lossis deoxyribose hauv DNA ) txuas mus rau ib pawg phosphate thiab ib lub hauv paus muaj nitrogen. Base siv nyob rau hauv DNA yog adenine (A), cytosine (C), guanine (G), thiab thymine (T). Hauv RNA, lub hauv paus uracil (U) siv qhov chaw ntawm thymine.
Dab tsi yog nucleotide ua los ntawm?
A nucleotide muaj peb yam: Lub hauv paus nitrogenous, uas tuaj yeem yog adenine, guanine, cytosine, lossis thymine (nyob rau hauv rooj plaub ntawm RNA, thymine yog hloov los ntawm uracil). Ib qho tsib-carbon qab zib, hu ua deoxyribose vim nws tsis muaj cov pa oxygen ntawm ib qho ntawm nws cov carbons. Ib lossis ntau pawg phosphate.
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