Qhov Tseem Ceeb Qhov txawv - G1 vs G2 Phase ntawm Cell Cycle
Cell division yog suav tias yog ib qho tseem ceeb ntawm kev yug me nyuam, kev loj hlob, thiab kev loj hlob ntawm lub cev. Ob hom kev faib cell yog pom nyob rau hauv cov kab mob xws li mitosis thiab meiosis. Lub voj voog ntawm tes yog tsim los ntawm ob theem tseem ceeb xws li interphase thiab mitotic theem. Interphase yog lub sijhawm ntev tshaj plaws uas cov hlwb npaj rau kev faib los ntawm kev loj hlob ntawm tes thiab ua ib daim qauv ntawm nws cov DNA. Interphase muab faib ua peb ntu; G1 theem, S theem, thiab G2 theem. Lub sijhawm ntawm cov theem no yog nyob ntawm hom kab mob. G1 theem yog thawj theem ntawm interphase uas muaj cov txheej txheem ntev dua thaum G2 theem yog theem kawg ntawm interphase thiab suav tias yog theem luv. Thaum lub sij hawm G1, lub xov tooj ntawm tes qhia thawj zaug kev loj hlob los ntawm kev luam cov organelles thiab ua cov molecular tsev blocks uas tsim nyog rau cov kauj ruam tom ntej. Thaum lub sij hawm G2, lub xov tooj ntawm tes qhia qhov kev loj hlob thib ob los ntawm kev ua cov proteins thiab organelles thiab pib reorganize nws cov ntsiab lus hauv kev npaj rau mitosis. Qhov no yog qhov sib txawv tseem ceeb ntawm G1 thiab G2 theem ntawm lub voj voog ntawm tes.
G1 Phase yog dab tsi?
G1 theem yog thawj theem ntawm kev loj hlob ntawm tes ntawm qhov cuam tshuam ntawm lub voj voog ntawm tes. Qhov no kuj tseem hu ua Gap 1 theem. G1 theem yog thawj theem ntawm interphase. Cov txheej txheem kev loj hlob tseem ceeb tshwm sim hauv lub cell ntawm G1 theem. Lub xovtooj ntawm tes yuav ua rau nws loj dua vim yog kev sib txuas ntawm cov proteins thiab RNA uas ua rau cov cell loj hlob. Nws kuj tseem pab tau thaum lub sijhawm rov ua dua ntawm DNA. Cov proteins uas ua rau lub sijhawm G1 muaj xws li cov protein ntau histone. Feem ntau ntawm RNA synthesized yog mRNA. Histone proteins thiab mRNA koom nrog thaum lub sij hawm DNA replication.
Lub sijhawm ntawm lub voj voog ntawm tes sib txawv raws li hom kab mob. Qee cov kab mob yuav muaj G1 ntev dua ua ntej nkag mus rau theem S, thiab lwm yam kab mob yuav muaj luv G1 theem. Hauv tib neeg, lub voj voog ntawm tes yuav siv sijhawm li 18 teev. Tawm ntawm tag nrho lub sijhawm rau kev ua tiav ntawm lub voj voog ntawm tes, theem G1 yuav siv sijhawm 1/3 ntawm lub sijhawm ntawd. Tab sis lub sijhawm no tuaj yeem hloov pauv vim qee yam. Cov yam tseem ceeb no raug xa mus rau kev loj hlob yam tseem ceeb uas suav nrog cellular ib puag ncig, muaj cov as-ham xws li cov proteins thiab cov amino acids tshwj xeeb thiab cellular kub. Qhov kub thiab txias feem ntau cuam tshuam rau kev loj hlob ntawm cov kab mob, thiab tus nqi no txawv ntawm kab mob mus rau kab mob. Hauv tib neeg, qhov kub zoo tshaj plaws rau kev loj hlob ntawm tes yog kwv yees li 37 0 C.
Daim duab 01: G1 thiab G2 Phases
Lub voj voog ntawm tes tswj kev tswj hwm kev tswj hwm ntawm G1 theem uas suav nrog lub sijhawm thiab kev sib koom tes ntawm lwm theem. G1 theem tau suav tias yog theem tseem ceeb txij li nws lub ntsiab lus uas nws txiav txim siab txoj hmoo ntawm lub xov tooj ntawm tes uas suav nrog kev mus txuas ntxiv mus rau qhov seem ntawm lub voj voog ntawm tes lossis tawm ntawm lub voj voog ntawm tes. Yog tias lub teeb liab raug ntxias kom khaws lub cell ntawm qhov tsis sib faib, lub cell yuav tsis nkag mus rau theem S. Lub xovtooj ntawm tes yuav txav mus rau theem dormant hu ua G0 theem yam tsis tau txuas ntxiv ntawm tes faib.
G2 Phase yog dab tsi?
Thaum lub sijhawm interphase ntawm lub voj voog ntawm tes, thaum G1 theem thiab S theem tiav, lub xovtooj yuav nkag mus rau theem G2. Nws tseem hu ua Gap 2 theem. G2 theem yog qhov kawg substage ntawm interphase. Thaum piv nrog G1 theem, G2 theem yog luv dua. Nws yog suav hais tias yog ib qho tseem ceeb nyob rau hauv lub cell voj voog nyob rau hauv lub ntsiab lus ntawm kev loj hlob thiab protein synthesis txij li thaum nws kim heev cellular loj hlob nyob rau hauv lub siab synthesis tus nqi ntawm cov proteins. Nrog rau kev sib txuas ntawm cov tsim nyog RNA thiab cov proteins, nws kuj pab tsim cov spindle apparatus thaum mitosis. Txawm hais tias theem no suav tias yog qhov tseem ceeb, theem no yuav zam tau los ntawm lub xov tooj ntawm tes thiab yog li, tuaj yeem nkag mus rau theem mitosis ncaj qha thaum S theem tiav. Tab sis los ntawm kev ua tiav G2 theem, cell tau npaj txhij rau mitosis.
Daim duab 02: G2 Phase
Yog tias lub xovtooj nkag mus rau theem G2, nws lees paub qhov tseeb tias lub xovtooj ntawm tes tau ua tiav S theem uas DNA rov ua dua. Yog li ntawd, tag nrho cov hlwb hauv G2 theem yuav nce mus rau mitosis qhov twg lub cell yuav muab faib ua ob lub hlwb zoo tib yam. Hauv G2 theem, lub xov tooj ntawm tes nce ntxiv nrog rau cov khoom sib txawv xws li cov nucleus thiab yuav luag tag nrho lwm cov cellular organelles. Zoo ib yam li G1 theem, G2 theem kuj tseem tswj hwm los ntawm cov txheej txheem ntawm kev tswj hwm lub voj voog ntawm tes. Thaum G2 theem ua tiav, nws ua tiav qhov kev cuam tshuam ntawm mitotic cell division.
Dab tsi yog qhov zoo sib xws ntawm G1 thiab G2 theem ntawm Cell Cycle?
- Ob leeg yog theem tseem ceeb ntawm lub voj voog ntawm tes.
- Ob theem koom nrog hauv kev loj hlob ntawm tes ua ntej nws faib.
- Cell voj voog tswj mechanisms yuav tswj ob theem,
Qhov txawv ntawm G1 thiab G2 Phase ntawm Cell Cycle yog dab tsi?
G1 Phase vs G2 Phase ntawm Cell Cycle |
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| G1 theem yog thawj theem ntawm kev cuam tshuam ntawm lub voj voog ntawm tes uas lub xovtooj ntawm tes qhia kev loj hlob los ntawm kev sib txuas cov proteins thiab lwm cov molecules. | G2 theem yog theem thib peb ntawm kev cuam tshuam ntawm lub voj voog ntawm tes uas lub cell npaj rau kev faib tawm nuclear los ntawm kev tsim cov proteins tsim nyog thiab lwm yam khoom. |
| Sub theem ntawm Inter Phase | |
| thawj theem ntawm interphase yog G1 theem. | theem kawg ntawm interphase yog G2 theem. |
| YSynthesis of RNA thiab Proteins | |
| Muaj nyob hauv G1 theem rau kev loj hlob ntawm tes thiab DNA rov ua dua | tshwm sim hauv G2 theem uas yog qhov tseem ceeb rau kev tsim spindle thiab mitosis. |
| Kev nce qib | |
| G1 theem pib mus rau theem S qhov twg DNA rov tshwm sim. | G2 theem pib mus rau theem mitotic. |
Summary – G1 vs G2 Phase of Cell Cycle
G1 theem thiab G2 theem yog ob theem nyob rau hauv lub interphase ntawm lub voj voog ntawm tes. Lub sijhawm ntawm lub voj voog ntawm tes sib txawv raws li hom kab mob. G1 theem yog thawj theem ntawm interphase. G2 theem yog qhov kawg substage ntawm interphase. Cov txheej txheem kev loj hlob tseem ceeb tshwm sim hauv lub cell ntawm G1 theem. Thaum piv nrog G1 theem G2 theem yog luv dua. Cov proteins uas ua rau lub sijhawm G1 muaj xws li cov protein ntau histone thiab feem ntau ntawm RNA synthesized yog mRNA. Yog tias ib lub xovtooj nkag mus rau theem G2, nws lees paub qhov tseeb tias lub xovtooj ntawm tes tau ua tiav S theem uas DNA rov ua dua. Cell voj voog tswj mechanisms yuav tswj ob theem. Qhov no yog qhov txawv ntawm G1 theem thiab G2 theem ntawm lub voj voog ntawm tes.
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Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline lub hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv nruab nrab ntawm G1 thiab G2 Phase ntawm Cell Cycle
