Video: Lub npe ntawm cov enzyme uas catalyzes ntawm cov synthesis ntawm mRNA Strand yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
mRNA yog "tus tub txib" RNA. mRNA yog synthesized nyob rau hauv lub nucleus siv cov nucleotide sib lawv liag DNA raws li tus qauv. Cov txheej txheem no yuav tsum muaj nucleotide triphosphates ua substrates thiab yog catalyzed los ntawm enzyme RNA polymerase II . Cov txheej txheem ntawm kev ua mRNA los ntawm DNA hu ua transcription, thiab nws tshwm sim nyob rau hauv lub nucleus.
Kuj paub, lub npe ntawm cov enzyme uas catalyzes polymerization ntawm mRNA yog dab tsi?
RNA polymerase
yog mRNA synthesized 5 mus rau 3? Genetic code Thaum lub sijhawm sau ntawv, RNA polymerase nyeem cov qauv DNA strand hauv 3 '→ 5 ' direction, tab sis mRNA yog tsim nyob rau hauv lub 5 'ua 3 'kev taw qhia. Cov mRNA yog ib leeg-stranded thiab yog li ntawd tsuas muaj peb ua tau nyeem thav ntawv, uas tsuas yog ib qho yog txhais.
Yog li ntawd, dab tsi enzyme catalyzes lub synthesis ntawm mRNA?
RNA polymerase II
Dab tsi enzyme pib 5 capping ntawm mRNA?
Peb enzymes, RNA triphosphatase , Guanylyltransferase (los yog CE), thiab methyltransferase koom nrog hauv kev sib ntxiv ntawm methylated 5 'cap rau mRNA.
Pom zoo:
Lub npe ntawm cov tshuaj yog dab tsi uas lub zog khaws cia nyob rau hauv thawj theem ntawm photosynthesis?
Cov kev cuam tshuam ntawm lub teeb-dependent siv lub teeb lub zog los ua ob lub molecules uas xav tau rau theem tom ntej ntawm photosynthesis: lub zog cia molecule ATP thiab txo cov khoom siv hluav taws xob NADPH. Nyob rau hauv cov nroj tsuag, lub teeb tshwm sim tshwm sim nyob rau hauv lub thylakoid daim nyias nyias ntawm organelles hu ua chloroplasts
Dab tsi yog lub npe uas muab rau kev sib raug zoo symbiotic uas ob hom tau txais txiaj ntsig?
Mutualism yog ib qho kev sib raug zoo uas ob hom tau txais txiaj ntsig. Commensalism yog ib qho kev sib raug zoo uas ib hom tau txais txiaj ntsig thaum lwm hom tsis cuam tshuam. Parasitism yog ib qho kev sib raug zoo uas ib hom (cov kab mob cab) tau txais txiaj ntsig thaum lwm hom (tus tswv tsev) raug mob
Lub npe ntawm lub network loj hauv lub cev yog dab tsi uas tswj cov noob qhia?
NARRATOR: Cov cim npe no thiab lwm tus tswj cov noob qhia los ntawm lub network loj hauv lub cev hu ua epigenome. RANDY JIRTLE: Epigenetics txhais tau tias tsuas yog lub ntsiab lus saum genome
Lub npe ntawm cov enzyme uas kuaj pom hauv qhov kev kuaj pom zoo catalase yog dab tsi?
Catalase Test- Ntsiab Cai, Siv, Txheej Txheem, Txhais Lus Txhais nrog ceev faj. Qhov kev sim no qhia pom tias muaj catalase, ib qho enzyme uas ua rau cov pa tawm ntawm cov pa oxygen los ntawm hydrogen peroxide (H2O2)
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb