2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Macronucleus, cov nucleus loj heev ntseeg tias cuam tshuam rau ntau lub xovtooj ntawm tes. Nws tshwm sim hauv suctorian thiab ciliate protozoans (piv txwv li Paramecium Paramecium Paramecium sib txawv ntawm qhov ntev li ntawm 0.05 txog 0.32 mm (0.002 txog 0.013 nti). xaus, xws li hauv P. caudatum, lo lus paramecium kuj tseem siv los hais txog cov kab mob ntawm tus kheej hauv ib hom Paramecium. https://www.britannica.com › science › Paramecium
Paramecium | ciliate genus | Britannica
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Lub hauv paus ntawm lub cell lub macronucleus yog dab tsi?
Lub macronucleus yog muab los ntawm lub micronucleus los ntawm cov txheej txheem ntawm DNA polytenisation. Lub macronucleus yog polyploid nyob rau hauv sib piv rau micronucleus, uas yog diploid. Lub macronucleus muaj ntau pawg ntawm chromosomes thiab nyob rau hauv uas DNA yog nquag transcribed.
Kev ua haujlwm ntawm macronucleus yog dab tsi?
Lub micronucleus ua lub luag haujlwm tseem ceeb hauv kev sib deev (conjugation) thiab feem ntau suav tias yog ib qho analog ntawm "germline" nucleus. Hom thib ob ntawm nucleus, macronucleus, yog lub luag haujlwm rau tag nrho cov kev hloov pauv nuclear thaum lub sijhawm kev loj hlob ntawm kev sib deev thiab yog li feem ntau hu ua "somatic" nucleus.
YMacronucleus Paramecium yog dab tsi?
Lub macronucleus yog qhov chaw ntawm tag nrho cov haujlwm metabolic ntawm lub cev. Lub micronucleus yog qhov chaw cia rau cov kab mobgenetic khoom ntawm lub cev. Nws ua rau cov macronucleus thiab yog lub luag hauj lwm rau cov genetic reorganization uas tshwm sim thaum lub sij hawm conjugation (cross-fertilization).
Ciliates tuaj yeem pom nyob qhov twg?
Ciliates yog ib pab pawg tseem ceeb ntawm cov neeg tawm tsam, ntau yuav luag txhua qhov chaw muaj dej- hauv pas dej, pas dej, dej hiav txwv, dej, thiab av.
Pom zoo:
Qhov twg yog qhov pom ib txwm pom thaum percussing thaj tsam plab?
Lub plab plab uas muaj roj ntau ib txwm muaj a tympanitic tympanitic Meteorism. Tshwj xeeb. Gastroenterology. Tympanite yog ib yam mob uas muaj roj ntau ntau hauv plab hnyuv thiab ua rau mob plab. Lo lus yog los ntawm Greek τύμπανο, "nruas"
Qhov twg los saib qhov pom kev tsis pom kev ntawm kev ua?
Koj muaj peev xwm kwj Txoj Kev Tsis Txaus Siab Ntawm Kev Ua los ntawm kev xauj lossis yuav hauv Google Play, Amazon Instant Video, thiab Vudu. Puas yog Qhov Teeb Meem Tsis Muaj Teeb Meem ntawm Kev Ua Hauv Netflix? Saib Qhov Teeb Meem Tsis Muaj Teeb Meem Ntawm Kev Nyob Netflix Hnub no!
Ntawm qhov capillaries pom nyob rau hauv lub cev nyob qhov twg?
Nruam: Cov capillaries no tsis muaj perforations thiab cia tsuas yog me me molecules dhau mus. Lawv tam sim no hauv nqaij, tawv nqaij, rog, thiab paj hlwb. Fenestrated: Cov capillaries no muaj cov pores me me uas tso cai rau cov molecules me los ntawm thiab nyob hauv cov hnyuv, ob lub raum, thiab cov qog endocrine.
Qhov twg yog qhov pom ze lossis pom deb?
Nearsightedness txhais tau hais tias koj lub pob muag yuav muaj qhov curvature ntau dua li qhov nruab nrab, qhov kev pom deb tuaj yeem ua rau koj lub pob muag tsis nkhaus ntau npaum li qhov yuav tsum tau ua. Cov neeg pom kev deb muaj qhov pom kev deb zoo dua, thaum neeg pom kev muaj qhov sib txawv (muaj zog nyob ze qhov muag).
Pom pom muaj calcium ntau nyob qhov twg?
Calcium yog nyob ib puag ncig peb. Tus tib neeg nruab nrab muaj kwv yees li 1kg ntawm calcium, ntawm 99% khaws cia hauv peb cov pob txha. Nws yog 5th feem ntau cov khoom nyob rau hauv lub ntiaj teb crust, tshwm sim dav li calcium carbonate uas yog feem ntau hu ua limestone.
