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.
