Video: Dab tsi yog ib qho laj thawj uas ib lub xovtooj yuav tsum tau tswj cov dej ntws hla ntawm daim nyias nyias?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dab tsi yog ib qho laj thawj uas ib lub xovtooj ntawm tes yuav tsum tswj cov flowacross daim nyias nyias? Lub nucleus yuav tsum coj mus rau hauv DNA. Cov cellneeds carbon dioxide raws li lub hauv paus ntawm lub zog. Cov cytoplasmneeds coj cov organelles.
Ib yam li ntawd, nws tau nug, vim li cas kev thauj mus los ntawm cov cell membrane tseem ceeb?
Cell thauj hais txog kev txav ntawm cov khoom hla lub cell membrane . Tej zaum feem ntau tseem ceeb feature ntawm a cell cov phospholipid daim nyias nyias yog tias lawv xaiv permeable. Qhov no tso cai rau ib cell tswj cov thauj ntawm cov ntaub ntawv, raws li dictated los ntawm lub cell cov muaj nuj nqi.
Yuav ua li cas cov tshuaj txav mus thoob lub cell membrane? Dej hla dhau lub daim nyias nyias nyob rau hauv ib tug diffusion txheej txheem hu ua osmosis. Thaum lub sijhawm thauj khoom, lub zog yog siv los pab cov khoom txav hla tus daim nyias nyias nyob rau hauv adirection tiv thaiv lawv cov concentration gradient. Kev thauj mus los yuav tshwm sim nrog kev pab ntawm cov twj tso kua mis los yog los ntawm kev siv cov vesicles.
Kuj paub, dab tsi tswj kev txav ntawm cov molecules rau hauv thiab tawm ntawm lub cell?
Cov cell membrane yog selectively permeable toions thiab organic molecules thiab tswj lub zog ntawm cov khoom hauv thiab tawm ntawm hlwb . Basic function ntawm lub cell membrane yog los tiv thaiv cov cell los ntawm nws ib puag ncig. Nws muaj phospholipid bilayer nrog embeddedproteins.
Dab tsi yog tus yam ntxwv ntawm lub cell membrane?
Cov cell membrane ncig lub cytoplasm ntawm kev ua neej nyob hlwb , lub cev cais cov intracellularcomponents los ntawm extracellular ib puag ncig. Cov cellmembrane yog semi-permeable, piv txwv li, nws tso cai rau qee yam khoom siv los ntawm nws thiab tsis tso cai rau lwm tus. Cov cell membrane muaj cov ntsiab lus loj ntawm cov protein, typica
Pom zoo:
Puas yog nws muaj tseeb tias nyob rau hauv kev thauj mus los ntawm kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog?
Hauv kev thauj mus los passive, kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog. _ Muaj tseeb_ 5. Endocytosis yog ib txoj kev uas ib lub cell membrane nyob ib puag ncig thiab siv cov khoom los ntawm ib puag ncig. Ib daim nyias nyias uas tso cai rau qee cov ntaub ntawv dhau los qhia txog kev xaiv permeability
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 laj thawj tseem ceeb ntawm lub dab dej?
Qhov feem ntau ua rau lub dab dej yog qhov hloov pauv hauv cov dej hauv av los yog nce sai sai hauv cov dej saum npoo av. Lub dab dej dab dej feem ntau tshwm sim thaum cov dej nag uas muaj kua qaub nkag los ntawm cov av thiab cov xuab zeb kom txog rau thaum nws mus txog rau lub pob zeb soluble xws li ntsev, limestone lossis sandstone
Dab tsi yog qhov laj thawj tseem ceeb uas koj tuaj yeem hnov lub suab nrov nyob deb ntawm dej thaum hmo ntuj?
Qhov kub thiab txias inversion yog vim li cas vim li cas lub suab tuaj yeem hnov ntau dua qhov kev ncua deb ntawm hmo ntuj tshaj li thaum nruab hnub - ib qho cuam tshuam feem ntau tsis raug rau kev puas siab puas ntsws tshwm sim thaum hmo ntuj nyob ntsiag to
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom