Video: Hom kab mob dab tsi tshwm sim hauv lub voj voog ntawm tes?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv cov hlwb eukaryotic, lossis cov hlwb nrog a nucleus , cov theem ntawm lub voj voog ntawm tes tau muab faib ua ob theem loj: interphase thiab mitotic (M) theem.
Yog li ntawd, nyob rau hauv hom cell --- prokaryotes lossis eukaryotes --- Puas yog lub voj voog ntawm tes tshwm sim?
Lub mitotic (M) theem thiab cytokinesis (C theem) ua ke hu ua cell faib , cov kev faib ntawm niam txiv cell (original) ua ob tug ntxhais hlwb (tshiab hlwb ), txhua tus muaj tib cov ntaub ntawv keeb kwm (chromosomes) raws li niam txiv cell . Mitosis ua TSIS TAU tshwm sim hauv prokaryotic hlwb uas ua TSIS muaj nucleus.
Qhov thib ob, nyob rau theem twg ntawm lub voj voog ntawm tes feem ntau ntawm cov hlwb no? Interphase
Tom qab ntawd, ib tug kuj yuav nug, puas tag nrho cov hlwb mus dhau lub voj voog ntawm tes?
Nyob cov hlwb mus dhau series ntawm theem hu ua cell voj voog . Cov hlwb loj hlob, luam lawv cov chromosomes, thiab tom qab ntawd faib ua cov tshiab hlwb . G1 Phase. Cov cell loj hlob.
mitosis nyob qhov twg hauv lub voj voog ntawm tes?
Interphase yog qhov ntev tshaj plaws ntawm qhov cell voj voog . Qhov no yog thaum lub cell loj hlob thiab luam nws DNA ua ntej tsiv mus rau hauv mob mitosis . Thaum mob mitosis , chromosomes yuav sib dhos, sib cais, thiab txav mus rau hauv tus ntxhais tshiab hlwb . Lub prefix inter- txhais tau tias nyob nruab nrab, yog li interphase tshwm sim ntawm ib qho mitotic (M) theem thiab tom ntej.
Pom zoo:
Lub luag haujlwm ntawm CDK yog dab tsi hauv lub cev ua haujlwm ntawm tes tshwj xeeb hauv lub voj voog ntawm tes?
Los ntawm phosphorylation, Cdks teeb liab lub xov tooj ntawm tes uas nws tau npaj kom dhau mus rau theem tom ntej ntawm lub voj voog ntawm tes. Raws li lawv lub npe qhia, Cyclin-Dependent Protein Kinases yog nyob ntawm cyclins, lwm chav kawm ntawm kev tswj hwm cov protein. Cyclins khi rau Cdks, ua kom cov Cdks rau phosphorylate lwm cov molecules
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 txhais los ntawm lub voj voog ntawm tes lossis cell division voj voog?
Cell Cycle thiab Mitosis (hloov kho 2015) LUB CELL CYCLE Lub voj voog ntawm tes, lossis lub voj voog ntawm tes faib, yog cov xwm txheej uas tshwm sim hauv lub cell eukaryotic ntawm nws qhov tsim thiab lub sijhawm nws rov ua dua nws tus kheej. Interphase yog nyob nruab nrab ntawm lub sijhawm thaum lub cell faib
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
Yuav ua li cas tshwm sim hauv S theem ntawm lub voj voog ntawm tes?
S theem ntawm lub voj voog ntawm tes tshwm sim thaum lub sij hawm interphase, ua ntej mitosis los yog meiosis, thiab yog lub luag hauj lwm rau cov synthesis los yog replication ntawm DNA. Nyob rau hauv txoj kev no, cov khoom siv caj ces ntawm lub xov tooj ntawm tes yog ob npaug ua ntej nws nkag mus rau mitosis lossis meiosis, cia kom muaj DNA txaus los faib rau hauv cov menyuam ntxhais