2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Txhua pawg ntawm peb lub hauv paus hauv mRNA tsim ib codon, thiab txhua tus codon qhia meej ib qho amino acid (li no, nws yog triplet code). Lub mRNA ib ntus yog li siv los ua tus qauv los sib sau ua ke-hauv kev txiav txim-cov saw ntawm cov amino acids uas tsim cov protein. … Ntau tus codons tuaj yeem sau rau tib cov amino acid.
txhua mRNA codon code rau dab tsi?
Qhov peb tsab ntawv ntawm codons txhais tau hais tias plaub nucleotides pom hauv mRNA - A, U, G, thiab C - tuaj yeem tsim tau tag nrho 64 qhov sib txawv. Ntawm no 64 codons, 61 sawv cev amino acids, thiab peb qhov seem yog sawv cev rau cov cim nres, uas ua rau qhov kawg ntawm cov protein synthesis.
Dab tsi ua rau codon hauv mRNA?
Ib codon yog ib ntus ntawm peb DNA lossis RNA nucleotides uas sib haum nrog cov amino acid tshwj xeeb lossis nres teeb liab thaum lub sij hawm tsim cov protein. … Txhua codon sib raug rau ib qho amino acid (lossis nres teeb liab), thiab tag nrho cov codons hu ua genetic code.
Dab tsi yog qhov sib piv codon ntawm mRNA?
tRNAs (hloov RNAs) nqa cov amino acids mus rau ribosome. Lawv ua raws li "bridges," piv cov codon hauv mRNA nrog cov amino acid nws codes rau.
Lub npe twg muab rau peb lub hauv paus hauv tus xa xov RNA uas qhia meej txog kev tso cov amino acid rau hauv cov saw hlau?
Cells txiav txim siab mRNAs los ntawm kev nyeem lawv cov nucleotides hauv peb pawg, hu ua codons. Txhua codon qhia txog cov amino acid tshwj xeeb, lossis, qee zaum, muab lub cim "stop" uas xaus kev txhais lus. Tsis tas li ntawd, lub codon AUG muaj lub luag haujlwm tshwj xeeb, ua tus pib codon qhov twg kev txhais lus pib.
Pom zoo:
Nyob rau hauv c ++ cov kev qhia tshwj xeeb siv tau rau qhov twg hauv qab no?
Kev piav qhia: Cov kev qhia tshwj xeeb tuaj yeem siv tau rau cov tswv cuab cov ntaub ntawv thiab cov haujlwmvim tias lawv yuav tsum nkag mus rau sab nraud ntawm qhov thaiv. 4. Yuav ua li cas nkag tau rau hauv qab no yog siv tau? Kev piav qhia:
Puas yog phagocytes tshwj xeeb lossis tsis tshwj xeeb?
Enzymes pom hauv lub cell ces zom cov kab mob txhawm rau txhawm rau rhuav tshem nws. Raws li phagocytes ua li no rau tag nrho cov kab mob uas lawv ntsib, lawv hu ua tsis tshwj xeeb. Puas yog phagocytes ib feem ntawm cov tshuaj tiv thaiv kab mob tshwj xeeb lossis tsis tshwj xeeb?
Puas yog meristems tshwj xeeb lossis tsis tshwj xeeb?
Meristems yog thaj chaw ntawm cov hlwb tsis tshwj xeeb hauv cov nroj tsuag uas muaj peev xwm faib cov cell. Meristems ua rau cov hlwb tsis tshwj xeeb uas muaj peev xwm dhau los ua ib hom cell tshwj xeeb. Puas yog cov ntaub so ntswg meristematic tshwj xeeb?
Puas yog tshwj xeeb thiab tshwj xeeb?
Raws li lub npe qhov txawv ntawm kev tshwj xeeb thiab kev tshwj xeeb. yog tias kev tshwj xeeb yog thaum tshwj xeeb yog txheej txheem tshwj xeeb. Qhov twg yog Qhov Tshwj Xeeb lossis Tshwj Xeeb? "Specialisation" thiab "
Vim li cas cov duab peb sab tshwj xeeb tshwj xeeb?
Kev paub txog kev sib raug zoo ntawm cov ces kaum lossis qhov sib piv ntawm ob sab ntawm cov duab peb sab tshwj xeeb tso cai rau ib tus kom sai sai suav ntau qhov ntev hauv cov teeb meem geometric yam tsis muajsiv rau ntau txoj hauv kev. Puas yog daim duab peb sab tshwj xeeb?
