Video: Dab tsi yog cell cycle hauv genetics?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A cell voj voog yog ib tug series ntawm cov txheej xwm uas tshwm sim nyob rau hauv ib cell raws li nws loj hlob thiab faib. A cell Nws siv sijhawm feem ntau hauv qhov hu ua interphase, thiab lub sijhawm no nws loj hlob, rov ua dua nws cov chromosomes, thiab npaj rau cell kev faib. Cov cell tom qab ntawd tawm hauv interphase, nkag mus rau mitosis, thiab ua tiav nws qhov kev faib tawm.
Yog li, dab tsi yog cell cycle genes?
Ntau yam ntawm noob muaj kev koom tes nyob rau hauv kev tswj ntawm cell kev loj hlob thiab kev faib . Cov cell voj voog yog cov cell cov txoj kev ntawm replicating nws tus kheej nyob rau hauv ib lub koom haum, step-by-step zam. Yog ib cell muaj qhov yuam kev hauv nws cov DNA uas tsis tuaj yeem kho tau, nws tuaj yeem raug kho cell tuag (apoptosis).
Ib tug kuj yuav nug, dab tsi yog lub luag hauj lwm ntawm lub voj voog ntawm tes? Qhov yooj yim tshaj plaws kev ua haujlwm ntawm lub voj voog ntawm tes yog kom duplicate kom raug qhov loj ntawm DNA nyob rau hauv chromosomes thiab ces cais cov ntawv luam kom meej rau hauv ob genetic ntxhais zoo tib yam. hlwb . Cov txheej txheem no txhais ob theem loj ntawm cov cell voj voog.
Ib tug kuj yuav nug, dab tsi yog lub voj voog ntawm lub xov tooj ntawm tes?
Cov cell voj voog , los yog cell - faib lub voj voog , yog series ntawm cov xwm txheej uas tshwm sim hauv ib cell ua rau duplication ntawm nws DNA (DNA replication) thiab faib cytoplasm thiab organelles los tsim ob tug ntxhais hlwb . Thaum lub sij hawm mitotic theem, cov replicated chromosomes thiab cytoplasm cais ua ob tug ntxhais tshiab hlwb.
Dab tsi yog cov xwm txheej tseem ceeb ntawm lub voj voog ntawm tes?
Cov cell voj voog muab faib ua ob cov xwm txheej tseem ceeb : interphase thiab mitosis. Txawm li cas los xij, ob theem no muaj cov kev faib tawm ntxiv. Thaum lub sij hawm interphase, lub cell luam nws DNA hauv kev npaj rau mitosis. Cov theem no tau muab faib ua 3 ntu luv: G1, S thiab G2.
Pom zoo:
Dab tsi yog Independent Assortment hauv genetics?
Lub hauv paus ntsiab lus ntawm Independent Assortment piav qhia txog qhov sib txawv ntawm cov noob ntawm nws tus kheej sib cais ntawm ib leeg thaum cov qe menyuam loj hlob. Kev ywj pheej ntawm cov noob thiab lawv cov yam ntxwv sib xws tau pom thawj zaug los ntawm Gregor Mendel hauv 1865 thaum nws kawm txog noob caj noob ces hauv cov txiv ntoo
Ob qhov tseem ceeb ntawm lub voj voog ntawm tes yog dab tsi thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Muaj ob theem tseem ceeb hauv lub voj voog ntawm tes. Thawj theem yog interphase thaum lub cell loj hlob thiab replicates nws DNA. Qhov thib ob yog theem mitotic (M-Phase) thaum lub sijhawm cell faib thiab hloov ib daim qauv ntawm nws cov DNA mus rau ob lub hlwb zoo tib yam
Dab tsi yog cell cycle inhibitors?
Cell cycle inhibitor (sel SY-kul in-HIH-bih-ter) Ib yam khoom siv los thaiv lub voj voog ntawm tes, uas yog cov kauj ruam ntawm lub xovtooj mus txog txhua zaus nws faib. Muaj ntau ntau hom cell cycle inhibitors. Qee qhov tsuas yog ua haujlwm ntawm cov kauj ruam tshwj xeeb hauv lub voj voog ntawm tes
Dab tsi yog 2 qhov tseem ceeb ntawm lub voj voog ntawm tes thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej
Dab tsi yog cell membrane hauv prokaryotic cell?
Prokaryotes thiab eukaryotes yog ob hom cell uas muaj nyob. Tab sis, prokaryotes muaj qee cov organelles nrog rau cov cell membrane, kuj hu ua phospholipid bilayer. Cov cell membrane no kaw lub cell thiab tiv thaiv nws, tso cai rau hauv qee cov molecules raws li qhov xav tau ntawm tes