Video: Dab tsi yog theem tseem ceeb ntawm mitosis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
[AP Biology] Yog vim li cas Prophase Cov theem feem ntau hauv Mitosis? Yog li peb tab tom ua ib qho Dos Root lab qhov twg peb suav thiab nrhiav feem pua ntawm cov hlwb tam sim no tab tom ua Mitosis thiab uas nyob hauv Interphase. Tsis suav nrog interphase, Prophase yog lub sijhawm feem ntau ntawm mitosis, tab sis vim li cas?
Ua raws li qhov no, dab tsi yog theem tseem ceeb tshaj plaws hauv mitosis?
Interphase
Tsis tas li ntawd, qhov tseem ceeb ntawm mitosis yog dab tsi? Mitosis yog ib txoj kev uas ib lub xovtooj sib faib ua ob lub hlwb zoo tib yam (cell division). Thaum mob mitosis ib cell? faib ib zaug los tsim ob lub hlwb zoo ib yam. Lub hom phiaj tseem ceeb ntawm mob mitosis yog rau kev loj hlob thiab hloov pauv cov cell uas ploj lawm.
Kuj nug, dab tsi yog theem tseem ceeb ntawm meiosis?
Prophase
Yog vim li cas prophase yog feem ntau theem nyob rau hauv mitosis?
Cells siv li ntawm 14 feem pua ntawm lub voj voog ntawm tes hauv prophase. Qhov no yog qhov loj tshaj ntawm lub sij hawm siv nyob rau hauv ib theem tom qab interphase . Lub sijhawm no yuav siv sijhawm ntev dua li lwm tus vim tias lub hnab ntawv nuclear tawg thiab cov microtubules yuav tsum tau txuas rau chromosomes . Metaphase raws li prophase.
Pom zoo:
Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kev taw qhia ntawm tes los ntawm kev sib cuag lub cev ncaj qha?
Kev taw qhia kuj tshwm sim ntawm cov hlwb uas yog kev sib cuag ntawm lub cev. Kev sib cuam tshuam ntawm cov proteins ntawm qhov chaw ntawm cov hlwb tuaj yeem ua rau muaj kev hloov pauv hauv cov cwj pwm ntawm tes. Piv txwv li, cov proteins nyob rau saum npoo ntawm T-cells thiab antigen nthuav tawm cov hlwb sib cuam tshuam los ua kom muaj kev taw qhia hauv T-cells
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom
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