Video: Dab tsi ntawm lub voj voog ntawm tes yog qhov tseem ceeb tshaj plaws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ua ke, G1, S, thiab G2 Phase ua rau lub sijhawm hu ua interphase . Cells feem ntau siv sij hawm ntau nyob rau hauv interphase tshaj lawv ua hauv mob mitosis . Ntawm plaub theem, G1 yog qhov sib txawv tshaj plaws ntawm lub sijhawm, txawm hais tias nws feem ntau yog qhov ntev tshaj plaws ntawm lub voj voog ntawm tes (Daim duab 1).
Kuj paub, dab tsi yog qhov tseem ceeb tshaj plaws ntawm mitosis?
Interphase
Tsis tas li ntawd, vim li cas lub voj voog ntawm tes tseem ceeb? Cov cell voj voog yog replication thiab luam tawm ntawm hlwb , txawm nyob rau hauv eukaryotes los yog prokaryotes. Nws yog tseem ceeb rau cov kab mob sib txawv, tab sis tag nrho nws tso cai rau lawv kom muaj sia nyob. Rau cov prokaryotes, cell voj voog , hu ua Binary Fission, tso cai rau lawv ua neej nyob los ntawm kev faib ua ob tug ntxhais tshiab hlwb.
Kuj Paub, dab tsi yog lub sij hawm luv tshaj ntawm lub voj voog ntawm tes?
Mitosis muab faib ua plaub theem: prophase, metaphase, anaphase , thiab telophase. Lub sijhawm luv tshaj plaws ntawm lub voj voog ntawm tes yog hu ua cytokinesis (kev faib tawm ntawm cytoplasm).
Dab tsi theem cell cleaved ua ob?
Lub Mitotic Theem . Lub mitotic theem yog ib qho txheej txheem multistep thaum lub sij hawm uas cov chromosomes duplicated yog ua raws, sib cais, thiab txav mus ua ob tshiab, zoo tib yam ntxhais hlwb . Thawj feem ntawm mitotic theem hu ua karyokinesis, los yog nuclear division.
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
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas