Video: Channel mediated transport yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev thauj mus los nruab nrab hais txog thauj nruab nrab los ntawm ib daim nyias nyias thauj protein ntau. Nws yog ib qho uniport system vim hais tias nws tshwj xeeb thauj cov piam thaj hauv ib qho kev taw qhia, cia nws cov concentration gradient hla cov cell membrane.
Tsis tas li ntawd, tus neeg nqa khoom nruab nrab thauj khoom yog dab tsi?
Tus neeg nqa khoom - Kev Thauj Mus Los Mechanisms A. Facilitated Diffusion Facilitated diffusion lossis uniport yog daim ntawv yooj yim tshaj plaws ntawm tus cab kuj - nruab nrab thauj thiab ua rau kev hloov pauv ntawm cov hydrophilic molecules loj (qab zib, amino acids, nu-cleotides, thiab organic acids thiab bases) thoob plaws cell membrane.
Ib yam li ntawd, yog Channel mediated diffusion active lossis passive? Facilitated diffusion (tseem hu ua yooj yim thauj los yog passive-mediated thauj ) yog tus txheej txheem ntawm spontaneous passive thauj (as opposed to kev thauj mus los ) ntawm cov molecules los yog ions hla ib daim nyias nyias ntawm ib qho transmembrane integral proteins.
Tsis tas li ntawd nug, Channel mediated txhawb kev nthuav dav yog dab tsi?
Channel - Kev sib haum xeeb Facilitated Diffusion . Hom ntawm Diffusion uas siv cov channel los tswj cov dej ntws ntawm ions thiab lwm yam molecules los ntawm lub cell membrane.
Dab tsi yog qhov txawv ntawm kev thauj mus los thiab cov channel?
- TRANSPORTERS : Hloov cov organic molecules me me los yog inorganic ions los ntawm ib sab ntawm daim nyias nyias mus rau lwm qhov los ntawm HLOOV SHAPE. - CHANNELS : tsim me me HYDROPHILIC PORES hla lub membrane los ntawm cov khoom no tuaj yeem dhau los ntawm DFFUSION.
Pom zoo:
Dab tsi channel yog ntws dej hiav txwv?
National Geographic
Membrane channel ua dab tsi?
Membrane channels yog ib tsev neeg ntawm cov roj ntsha membrane uas tso cai rau kev txav mus los ntawm ions (ion channels), dej (aquaporins) lossis lwm cov kua dej kom dhau los ntawm daim nyias nyias los ntawm lawv cov electrochemical gradient. Lawv tau kawm siv ntau yam kev sim channelomics thiab lej
Retrovirus mediated transfer yog dab tsi?
Kev hloov cov noob no yog kho los ntawm tus neeg nqa khoom lossis vector, feem ntau yog tus kab mob lossis plasmid. Tus kab mob retrovirus yog tus kab mob uas nqa nws cov khoom siv caj ces hauv daim ntawv ntawm RNA es tsis yog DNA. Cov txheej txheem: Tam sim ntawd tom qab kis tus kab mob, tus kab mob retrovirus tsim cov DNA luam ntawm nws cov RNA genome siv nws cov ntawv thim rov qab
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
Dab tsi yog hom ion channel?
Ntau hom ion channel tau piav qhia: cov kev teb rau hluav taws xob (voltage-dependent ion channels), mechanical, lossis chemical (ligand-gated ion channels) stimuli; ion raws tswj los ntawm phosphorylation / dephosphorylation mechanisms; thiab G protein-gated ion channels