Video: Dab tsi yog hom ion channel?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntau hom ion channel tau piav qhia: cov channel teb rau hluav taws xob (voltage-dependent ion channels ), mechanical, lossis chemical (ligand-gated ion channels ) stimuli; ion channels tswj los ntawm phosphorylation / dephosphorylation mechanisms; thiab G protein-gated ion channels.
Kuj paub yog, muaj pes tsawg hom ion channel muaj?
peb
Ib yam li ntawd, ion channel siv rau dab tsi? Lub luag haujlwm tseem ceeb ntawm ion channels yog los tswj txoj kev ntawm ions nyob rau hauv lub cell membrane, thiab kev hloov ntawm intracellular ion concentration tuaj yeem pom raws li thawj qhov kev taw qhia mechanism ntawm ion channels.
Yog li ntawd, dab tsi yog ion channels ua los ntawm?
Ion channels yog ib qho membrane proteins, feem ntau tsim los ua ke ntawm ntau tus neeg cov proteins. Xws li "multi-subunit" cov rooj sib tham feem ntau koom nrog kev sib koom ua ke ntawm cov proteins zoo ib yam lossis homologous uas tau ntim ze ze ntawm lub qhov dej uas muaj dej los ntawm lub dav hlau ntawm daim nyias nyias lossis lipid bilayer.
Hom proteins twg yog ion channels?
Ion channel receptors feem ntau yog multimeric cov proteins nyob rau hauv lub plasma membrane. Txhua yam ntawm no cov proteins npaj nws tus kheej kom nws daim ntawv ib tug passageway los yog pore extending ntawm ib sab ntawm daim nyias nyias mus rau lwm yam.
Pom zoo:
Dab tsi yog qhov txawv ntawm daim ntawv qhia lub hom phiaj thiab daim ntawv qhia lub hom phiaj tshwj xeeb?
Qhov tseem ceeb hauv daim ntawv qhia dav dav yog nyob ntawm qhov chaw. Phab ntsa daim duab qhia chaw, feem ntau daim ntawv qhia pom nyob rau hauv atlases, thiab txoj kev maps yog tag nrho cov nyob rau hauv qeb no. Thematic maps, tseem hu ua daim ntawv qhia tshwj xeeb, qhia txog thaj chaw faib khoom ntawm ib lub ntsiab lus lossis qhov tshwm sim
Dab tsi channel yog ntws dej hiav txwv?
National Geographic
Dab tsi yog qhov sib txawv ntawm cov channel gated?
Muaj peb lub ntsiab ntawm ion channel, i.e., voltage-gated, extracellular ligand-gated, thiab intracellular ligand-gated nrog rau ob pawg ntawm lwm yam ion channels
Channel mediated transport yog dab tsi?
Kev thauj mus los nruab nrab yog hais txog kev thauj mus los los ntawm kev thauj mus los ntawm cov protein. Nws yog ib qho uniport system vim hais tias nws tshwj xeeb thauj cov piam thaj hauv ib qho kev taw qhia, nqes nws cov concentration gradient hla lub cell membrane
Dab tsi yog junk DNA thiab nws lub hom phiaj yog dab tsi?
Hauv cov noob caj noob ces, lo lus khib nyiab DNA hais txog thaj tsam ntawm DNA uas tsis yog coding. Qee qhov DNA noncoding no yog siv los tsim cov khoom tsis yog RNA xws li hloov RNA, tswj RNA thiab ribosomal RNA