Video: Dab tsi yog cytoskeletal cov ntsiab lus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov cytoskeleton cov tsos mob Ntawm lub cell yog tsim los ntawm microtubules, actin filaments, thiab intermediate filaments. Cov qauv no muab lub xovtooj ntawm nws cov duab thiab pab npaj cov khoom ntawm tes. Tsis tas li ntawd, lawv muab lub hauv paus rau kev txav mus los thiab kev faib tawm ntawm tes.
Raws li txoj cai, 3 cytoskeletal ntsiab yog dab tsi?
Peb lub ntsiab structural Cheebtsam ntawm lub cytoskeleton yog microtubules (tsim los ntawm tubulins), microfilaments (tsim los ntawm actins) thiab nruab nrab filaments. Tag nrho peb lub ntsiab lus cuam tshuam nrog ib leeg uas tsis yog-covalently.
Ib tug kuj yuav nug, dab tsi yog peb lub ntsiab cytoskeletal proteins thiab lawv lub luag haujlwm? Ces tshawb lub peb lub ntsiab hom ntawm cov proteins uas ua rau cytoskeleton cov tsos mob : microfilaments, intermediate filaments, thiab microtubules, thiab cov muaj nuj nqi ntawm txhua tus.
Tsis tas li ntawd, cytoskeleton yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Los ntawm ib tug series ntawm intercellular cov proteins , lub cytoskeleton muab ib cell nws puab , muaj kev txhawb nqa, thiab txhawb nqa kev txav mus los los ntawm peb lub ntsiab Cheebtsam: microfilaments, intermediate filaments, thiab microtubules.
Dab tsi yog peb hom fibers loj uas ua rau lub cytoskeleton thiab lawv lub luag haujlwm yog dab tsi?
Peb hom loj ntawm filaments ua kom lub cytoskeleton : actin filaments, microtubules, thiab intermediate filaments. Actin filaments tshwm sim hauv a cell nyob rau hauv daim ntawv ntawm meshworks los yog bundles ntawm parallel fibers ; lawv pab txiav txim seb cov duab ntawm lub cell thiab kuj pab nws ua raws li lub substrate.
Pom zoo:
Lub ntsiab lus ntawm lub hauv paus lo lus meter nyob rau hauv lo lus tus pas ntsuas kub yog dab tsi?
Lub hauv paus chiv keeb ntawm lo lus 'Thermometer' Qhov thib ob ntawm lo lus, 'meter', los ntawm Fabkis -mètre (uas muaj nws cov hauv paus hauv lub post-classical Latin: -meter, -metrumand lub ancient Greek, -Μέτρο ν, lossis metron, uas txhais tau tias ntsuas qee yam, xws li qhov ntev, qhov hnyav, lossis dav)
Dab tsi yog lub ntsiab lus ntawm kev hloov pauv lom neeg hauv cov ntsiab lus ntawm allele zaus?
Microevolution, los yog evolution ntawm ib tug me me, yog txhais raws li ib tug kev hloov nyob rau hauv lub zaus ntawm noob variants, alleles, nyob rau hauv ib tug pej xeem ntau tiam. Lub teb ntawm biology uas kawm txog allele frequencies nyob rau hauv cov pejxeem thiab yuav ua li cas lawv hloov lub sij hawm yog hu ua pej xeem noob caj noob ces
Vim li cas cov ntsiab lus thiab cov ntsiab lus yog cov tshuaj ntshiab?
Elements thiab compounds yog ob qho tib si piv txwv ntawm cov khoom ntshiab. Ib yam khoom uas tuaj yeem tawg mus rau hauv cov tshuaj lom neeg yooj yim dua (vim tias nws muaj ntau dua ib qho) yog ib qho khoom sib xyaw. Piv txwv li, dej yog acompound tsim los ntawm cov ntsiab lus hydrogen thiaboxygen
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog
Dab tsi yog cov lej thiab cov lej rational Yuav ua li cas cov ntsiab lus kos rau ntawm lub dav hlau sib koom tes?
Raws li peb tau hais, cov ntsiab lus ntawm lub dav hlau sib koom ua ke yog sawv cev raws li (a, b), qhov twg a thiab b yog tus lej lej. Rational cov lej yog cov lej uas tuaj yeem sau ua feem, p / q, qhov p thiab q yog tus lej. Peb hu rau x-coordinate ntawm lub point thiab peb hu b tus y-coordinate ntawm lub point