Video: Dab tsi yog qhov sib txuas ntxiv rau RNA strand Ucgaugg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
RNA polymerase synthesizes RNA strand complementary rau ib tug template DNA txoj hlua. Nws synthesizes RNA strand nyob rau hauv 5 'mus rau 3' kev taw qhia, thaum nyeem cov template DNA strand nyob rau hauv lub 3' mus rau 5' kev taw qhia. Tus qauv DNA strand thiab RNA strand yog antiparallel.
Ib yam li ib tug yuav nug, dab tsi yog qhov sib ntxiv ntawm DNA?
npe Biochemistry. ob qho tib si ntawm ob chains uas ua ib tug ob helix ntawm DNA , nrog cov haujlwm sib xws ntawm ob txoj hlua khi tau tsim los ntawm ib khub ntawm ntxiv hauv paus. ib seem ntawm ib tug nucleic acid saw uas yog sib txuas mus rau lwm tus los ntawm ib theem ntawm lub hauv paus khub.
Ib yam li ntawd, dab tsi yuav yog qhov sib lawv liag ntawm cov hauv paus ntawm cov hlua txuas ntxiv? Cov hauv paus no yog adenine (A), thymine (T), guanine (G) thiab cytosine (C). Cov nucleotides no tuaj ua ke los tsim cov saw ntev hu ua DNA strands. Ob qho ntxiv DNA strands sib raug zoo rau ib leeg nyob rau hauv dab tsi zoo li ib tug ntaiv ua ntej winding rau hauv ob daim ntawv helix.
Kuj paub, dab tsi yog qhov sib ntxiv ntawm mRNA?
Hauv mRNA , Uracil yog hloov rau thymine ua lub hauv paus complementary rau adenine. Txij thaum lwm tus txoj hlua ntawm DNA muaj cov hauv paus complementary rau tus qauv txoj hlua , cov mRNA muaj tib qhov sib lawv liag ntawm cov hauv paus rau saum txoj hlua ntawm DNA qhia saum toj no (nrog U hloov rau T), uas yog hu ua coding txoj hlua.
Dab tsi yog qhov sib ntxiv ntawm RNA?
DNA thiab RNA puag khub complementarity
| Nucleic Acid | Nucleobases | Base ntxiv |
|---|---|---|
| DNA | adenine (A), thymine (T), guanine (G), cytosine (C) | A = T, G≡C |
| RNA | adenine (A), uracil (U), guanine (G), cytosine (C) | A = U, G≡C |
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