Video: Vim li cas DNA thiab RNA tseem ceeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Deoxyribonucleic acid ( DNA thiab ribonucleic acid ( RNA ) tej zaum yog feem ntau tseem ceeb molecules nyob rau hauv cell biology, lub luag hauj lwm rau kev cia thiab nyeem cov ntaub ntawv ntawm caj ces uas underpins tag nrho lub neej. Cov kev sib txawv no ua rau ob lub molecules ua haujlwm ua ke thiab ua tiav lawv lub luag haujlwm tseem ceeb.
Tsis tas li ntawd, vim li cas DNA thiab RNA tseem ceeb rau cov tsiaj muaj sia?
Nucleic acids feem ntau yog tseem ceeb macromolecules rau kev txuas ntxiv ntawm lub neej . Lawv nqa daim ntawv qhia txog caj ces ntawm lub xov tooj ntawm tes thiab nqa cov lus qhia rau kev ua haujlwm ntawm tes. Ob hom nucleic acids yog deoxyribonucleic acid ( DNA thiab ribonucleic acid ( RNA ).
Qhov thib ob, qhov tseem ceeb ntawm DNA yog dab tsi? DNA Nws yog ib qho tseem ceeb rau tag nrho cov muaj sia nyob - txawm cov nroj tsuag. Nws yog tseem ceeb rau qhov qub txeeg qub teg, coding rau cov proteins thiab cov kev qhia genetic qhia rau lub neej thiab nws cov txheej txheem. DNA tuav cov lus qhia rau lub cev los yog txhua lub cell txoj kev loj hlob thiab kev tsim tawm thiab thaum kawg tuag.
Hauv qhov no, vim li cas RNA tseem ceeb?
RNA -hauv lub luag haujlwm no - yog "DNA luam theej duab" ntawm tes. Nyob rau hauv ib tug xov tooj ntawm kev kho mob tseem ceeb kab mob RNA , dua li DNA, nqa cov ntaub ntawv kab mob caj ces. RNA kuj plays ib tseem ceeb Lub luag haujlwm hauv kev tswj cov txheej txheem ntawm tes - los ntawm kev faib cell, sib txawv thiab kev loj hlob mus rau cell aging thiab tuag.
Vim li cas RNA txawv ntawm DNA?
Muaj ob sib txawv uas paub qhov txawv DNA los ntawm RNA : (a) RNA muaj cov suab thaj ribose, thaum DNA muaj me ntsis txawv qab zib deoxyribose (ib hom ribose uas tsis muaj oxygen atom), thiab (b) RNA muaj cov nucleobase uracil thaum DNA muaj thymine.
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