Video: S sawv rau dab tsi thiab dab tsi tshwm sim hauv theem no?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
S theem sawv rau " Synthesis ". Qhov no yog theem thaum DNA replication tshwm sim. G2 theem sawv rau "GAP 2".
Tsuas yog li ntawd, dab tsi tshwm sim thaum lub sij hawm S theem ntawm lub voj voog ntawm tes?
Cov S theem ntawm a cell voj voog 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 no txoj kev, genetic khoom ntawm a cell yog ob npaug ua ntej nws nkag mus rau mitosis lossis meiosis, tso cai kom muaj DNA txaus los faib ua tus ntxhais hlwb.
Kuj Paub, theem S txhais li cas? S theem . S - Phase yog ib feem ntawm lub voj voog ntawm tes uas DNA yog replicated, tshwm sim ntawm G1 theem thiab G2 theem . Qhov tseeb thiab yog DNA replication yog tsim nyog los tiv thaiv genetic abnormalities uas feem ntau ua rau cell tuag los yog kab mob.
Ib yam li ntawd ib tug yuav nug, dab tsi yog nyob rau hauv biology?
npe Cell Biology . Lub sij hawm ntawm lub voj voog ntawm tes ua ntej mitosis, thaum lub sij hawm uas cov chromosomes replicated.
Yuav ua li cas ntawm S checkpoint?
A chaw kuaj mob yog ib qho ntawm ob peb lub ntsiab lus nyob rau hauv lub voj voog ntawm eukaryotic cell uas qhov kev loj hlob ntawm ib lub xovtooj mus rau theem tom ntej hauv lub voj voog tuaj yeem raug nres kom txog thaum cov xwm txheej zoo. G 2 chaw kuaj mob Ua kom tag nrho cov chromosomes tau rov ua dua thiab tias DNA replicated tsis puas ua ntej cell nkag mus rau mitosis.
Pom zoo:
Yuav ua li cas tshwm sim rau tam sim no nyob rau hauv ib tug parallel circuits thaum ntxiv qhov muag teev?
Raws li ntau qhov muag tau ntxiv, qhov tam sim no nce. Raws li ntau resistors ntxiv nyob rau hauv parallel, tag nrho tam sim no lub zog nce. Yog li ntawd, tag nrho cov tsis kam ntawm Circuit Court yuav tsum tau txo. Qhov tam sim no nyob rau hauv txhua lub teeb yog tib yam vim hais tias tag nrho cov qhov muag teev glowed nrog tib brightness
Dab tsi tshwm sim hauv g1 g2 thiab S theem?
Interphase yog tsim los ntawm G1 theem (kev loj hlob ntawm tes), tom qab los ntawm S theem (DNA synthesis), tom qab los ntawm G2 theem (kev loj hlob ntawm tes). Thaum kawg ntawm interphase los ntawm mitotic theem, uas yog tsim los ntawm mitosis thiab cytokinesis thiab ua rau tsim ntawm ob tug ntxhais hlwb
Ob theem tseem ceeb ntawm photosynthesis yog dab tsi thiab txhua theem tshwm sim nyob qhov twg?
Ob theem ntawm photosynthesis: Photosynthesis yuav siv sij hawm qhov chaw nyob rau hauv ob theem: lub teeb-dependent kev tshwm sim thiab lub Calvin voj voog (lub teeb-yooj yim kev xav). Lub teeb-nyob ntawm cov tshuaj tiv thaiv, uas tshwm sim hauv thylakoid daim nyias nyias, siv lub teeb lub zog los ua ATP thiab NADPH
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 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