2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Multinucleate cells (multinucleated lossis polynuclear cells) yog cov hlwb eukaryotic uas muaj ntau dua ib lub nucleus hauv ib lub cell, piv txwv li, ntau lub nuclei sib koom ib qho cytoplasm.
Vim li cas qee lub hlwb muaj ntau ntau?
Vim cov leeg nqaij loj heev, -los ntawm kwv yees qhov nkag mus rau hauv keeb kwm-, nws xav tau myonuclei ntau dua. Nyob rau hauv cov ntaub ntawv ntawm hypertrophy, piv txwv li, qhov ntim ntawm cov leeg nqaij tuaj yeem loj tuaj thaum muaj cov nuclei ntau dua. Yog li nws yog multinucleated los ntawm kev ua haujlwm thiab cov qauv (ntev ntev) kev xav.
Cov hlwb hauv tib neeg lub cev muaj ntau lub nucleated?
Ntxim qab kawg, qee lub hlwb hauv lub cev, xws li cov hlwb, muaj ntau dua ib lub nucleus (Daim duab 3.20), uas yog hu ua multinucleated. Lwm cov hlwb, xws li mammalian cov qe ntshav liab (RBCs), tsis muaj nuclei txhua.
Puas muaj ntau lub hlwb?
Ib txhia tib neeg lub hlwb tsis muaj nuclei kiag li, zoo li cov qe ntshav liab. Lwm tus, txawm li cas los xij, xws li lub siab hlwb thiab qee cov leeg nqaij, muaj ntau lub nucleated, txhais tau tias lawv muaj ntau tus nuclei.
Vim li cas cov cell multinucleated tsim?
Kev tsim thiab kev loj hlob ntawm ntau cov nucleated myofibers lossis myotubes tshwm sim los ntawm cov txheej txheem hu ua myogenesis. Thaum lub sij hawm myogenesis, mononucleated myoblasts thim tawm ntawm lub voj voog ntawm tes, pib cov leeg nqaij tshwj xeeb gene qhia, thiab tom qab ntawd fuse nrog ib leeg los ua nascent, multinucleated myofibers.
Pom zoo:
Puas yog cov hlwb meristematic muaj cov phab ntsa ntawm cov cell thib ob?
Cov phab ntsa ntawm cov hlwb meristematic yog hom feem ntau raug xaiv los ua cov phab ntsa thawj (Bailey, 1940). Kev saib xyuas zoo tshaj plaws tau muab rau cov phab ntsa ntawm cov hlwb sib txawv ntau dua, tshwj xeeb tshaj yog rau cov hlwb fiber ntau uas muaj kev lag luam tseem ceeb.
Qhov twg hu ua cartwheel cell?
A plasma cell yog lub npe hu ua cartwheel cell. Plasma cells tseem hu ua plasma B cells, plasmocytes, thiab effector B cells. Lawv yog cov qe ntshav dawb uas tso cov tshuaj tiv thaiv kab mob ntau ntau. Lub hlwb twg hu ua cartwheel cells?
Qhov hloov pauv protein tshwm sim nyob rau hauv lub cell?
Kev hloov pauv tom qab kev txhais lus tshwm sim hauv lub ERthiab suav nrog folding, glycosylation, multimeric protein sib dhos thiab proteolytic cleavage ua rau cov protein kom loj hlob thiab ua kom muaj zog. Lawv tshwm sim sai li sai tau thaum cov peptide loj hlob tuaj hauv ER thiab raug hloov kho enzymes.
Dab tsi yog fibroblast cell?
Fibroblast Ib fibroblast yog hom cell feem ntau pom hauv cov ntaub so ntswg. Fibroblasts secrete collagen proteins uas siv los tswj cov txheej txheem rau ntau cov ntaub so ntswg. Lawv kuj ua lub luag haujlwm tseem ceeb hauv kev kho qhov txhab.
Hauv galvanic cell tus choj ntsev?
Ib tus choj ntsev lossis ion choj, hauv electrochemistry, yog ib lub chaw kuaj mob siv los txuas cov oxidation thiab txo qis ib nrab ntawm cov cell ntawm a galvanic cell (voltaic cell), hom electrochemical cell. Nws tuav cov hluav taws xob nruab nrab hauv lub voj voog sab hauv.
