Cov txheej txheem:
Video: Dab tsi yog cov haujlwm sib txawv ntawm daim nyias nyias?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev ua haujlwm ntawm Membrane Proteins
Membrane proteins tuaj yeem ua haujlwm ntau yam ntawm tus yuam sij muaj nuj nqi : Junctions – Pab kom txuas thiab koom ob lub hlwb ua ke. Enzymes - Kho rau daim nyias nyias localises cov txheej txheem metabolic. Tsheb thauj mus los - Lub luag haujlwm rau kev yooj yim diffusion thiab nquag thauj
Tsis tas li lo lus nug yog, dab tsi yog qhov sib txawv ntawm cov proteins membrane thiab lawv txoj haujlwm?
Muaj nuj nqi
- Membrane receptor proteins relay signals ntawm lub cell sab hauv thiab sab nraud ib puag ncig.
- Thauj cov proteins txav cov molecules thiab ions hla lub membrane.
- Membrane enzymes yuav muaj ntau yam dej num, xws li oxidoreductase, transferase lossis hydrolase.
Ib tug kuj yuav nug, dab tsi yog 6 lub luag haujlwm ntawm daim nyias nyias? Cov ntsiab lus hauv cov teeb no (7)
- 6 Kev Ua Haujlwm ntawm Membrane Proteins. Kev thauj mus los.
- Kev thauj mus los. Hydrophilic channel.
- Enzymatic kev ua haujlwm. Sequential kauj ruam hauv metabolic txoj kev.
- Teeb liab transduction. relay chemical lus.
- Intercellular Joining. Ntau yam Cell Junctions.
- Cell-cell paub.
- Txuas rau cytoskeleton thiab ECM.
Hais txog qhov no, dab tsi yog qhov txawv ntawm daim nyias nyias proteins?
Raws li lawv cov qauv, muaj peb lub ntsiab hom membrane proteins : thawj tus yog integral daim nyias nyias protein uas yog nyob mus ib txhis anchored los yog ib feem ntawm lub daim nyias nyias , ob hom yog peripheral daim nyias nyias protein uas tsuas yog txuas rau ib ntus rau lipid bilayer lossis rau lwm qhov sib xyaw cov proteins , thiab peb
Dab tsi yog 5 hom membrane proteins?
1 Teb
- thauj cov protein. Cov proteins transmembrane tuaj yeem tsim cov pore lossis channel hauv daim nyias nyias uas yog xaiv rau qee cov molecules.
- Enzymes. Cov proteins no muaj cov haujlwm enzymatic.
- Teeb liab transduction proteins.
- Paub cov proteins.
- Koom nrog cov protein.
- Daim ntawv txuas.
Pom zoo:
Puas yog glycerol xav tau daim nyias nyias nyias kom hla daim nyias nyias?
Glycerol yog lipid soluble yog li nws diffuses los ntawm yooj yim diffusion ncaj qha los ntawm lub cell membrane thaum cov piam thaj yog ib tug polar molecule yog li nws diffuses los ntawm kev yooj yim diffusion uas txhais tau hais tias nws xav tau ib tug channel protein ua hauj lwm thiab qhov no txhais tau tias thaj chaw saum npoo rau cov piam thaj kom nkag mus yog tsawg dua. tshaj ib qho rau glycerol
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Yuav ua li cas sib txawv ntawm cov molecules dhau los ntawm daim nyias nyias?
Lub plasma membrane yog selectively permeable; hydrophobic molecules thiab me me polar molecules tuaj yeem cuam tshuam los ntawm lipid txheej, tab sis ions thiab cov polar loj molecules tsis tuaj yeem. Integral membrane proteins pab kom ions thiab cov polar loj molecules hla los ntawm daim nyias nyias los ntawm passive los yog active thauj
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Lub luag haujlwm ntawm daim nyias nyias thauj proteins yog dab tsi?
Kev thauj cov proteins ua lub qhov rooj rau ntawm tes, pab qee cov molecules hla rov qab mus rau hauv cov plasma membrane, uas nyob ib puag ncig txhua lub cell. Nyob rau hauv passive thauj molecules txav los ntawm ib cheeb tsam ntawm siab concentration mus rau qhov chaw uas tsis muaj concentration