Video: Dab tsi yog peb qhov tseem ceeb hauv biology?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Raws li qhov system no, tsob ntoo ntawm lub neej muaj peb domains : Archaea, Kab mob, thiab Eukarya. Thawj ob yog tag nrho cov kab mob prokaryotic, los yog ib leeg-celled kab mob uas lawv cov hlwb tsis muaj nucleus.
Tsuas yog li ntawd, 3 hom kev sau npe yog dab tsi?
Peb lub npe yog Archaea, Cov Kab Mob, thiab Eukarya. 4. Cov kab mob Prokaryotic yog ib yam ntawm cov sau Archaea los yog domain Bacteria; Cov kab mob uas muaj eukaryotic hlwb muaj nyob rau sau npe Eukarya.
Tsis tas li ntawd, peb lub Nceeg Vaj hauv biology yog dab tsi? Peb Domains of Life Lub tswv yim feem ntau siv tam sim no faib tag nrho cov kab mob nyob rau hauv tsib lub nceeg vaj : Monera (bacteria), Protista, Fungi, Plantae, thiab Animalia. Qhov no coexisted nrog lub tswv yim faib lub neej rau hauv ob lub ntsiab faib: Prokaryotae (cov kab mob, thiab lwm yam).
Hauv qhov no, dab tsi yog qhov tseem ceeb hauv biology?
Hauv lom taxonomy, ib sau npe (tseem superregnum, superkingdom, los yog faj tim teb chaws) yog ib tug taxon nyob rau hauv lub siab tshaj plaws qeb ntawm cov kab mob, siab tshaj lub nceeg vaj. Peb- sau npe system ntawm Carl Woese, qhia hauv xyoo 1990, nrog cov pab pawg sab saum toj ntawm Archaea, Bacteria, thiab Eukaryota thaj chaw.
Peb lub neej yog dab tsi thiab lawv txawv li cas?
Txhua lub neej tuaj yeem muab faib ua peb yam, raws li hom cell ntawm lub cev: Kab mob : cov hlwb tsis muaj cov nucleus. Archaea : hlwb tsis muaj nucleus; lawv muaj phab ntsa sib txawv ntawm tes kab mob . Eukarya : Cell muaj ib tug nucleus.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm nomenclature hauv biology?
Cov npe kev tshawb fawb yog cov ntaub ntawv Txhua hom kev lees paub hauv ntiaj teb (tsawg kawg hauv txoj kev xav) tau muab ob lub npe tshawb fawb. Qhov no yog hu ua 'binomial nomenclature.' Cov npe no tseem ceeb vim tias lawv tso cai rau tib neeg thoob plaws ntiaj teb sib txuas lus tsis meej txog hom tsiaj
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 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
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom