Qhov txawv ntawm Phragmoplast thiab Cell Phaj

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Qhov txawv ntawm Phragmoplast thiab Cell Phaj
Qhov txawv ntawm Phragmoplast thiab Cell Phaj

Video: Qhov txawv ntawm Phragmoplast thiab Cell Phaj

Video: Qhov txawv ntawm Phragmoplast thiab Cell Phaj
Video: Qhov txawv ntawm Zaj Tshoob and Txiv Xaiv 2024, Kaum ib hlis
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Qhov sib txawv tseem ceeb ntawm phragmoplast thiab cell phaj yog tias phragmoplast yog cov txheej txheem nyuaj ntawm microtubules, microfilaments, Golgi derived vesicles thiab endoplasmic reticulum uas ua rau cov phaj ntawm tes, uas yog cov txheej txheem flattened membrane uas ua haujlwm li. lub precursor ntawm phab ntsa cell tshiab.

Cytokinesis hais txog kev faib cov niam txiv cell cytoplasm ua ob ntu los tsim ob lub hlwb tshiab. Cov txheej txheem no txawv ntawm cov nroj tsuag thiab cov tsiaj hlwb vim muaj cov phab ntsa ntawm tes hauv cov nroj tsuag. Yog li ntawd, nyob rau hauv cov nroj tsuag hlwb, cytokinesis tshwm sim los ntawm kev tsim ntawm lub cell phaj nyob rau hauv nruab nrab ntawm lub cell. Muaj ntau theem ntawm kev tsim cov phaj cell. Thaum pib, ib tug phragmoplast (ib tug array ntawm microtubules) yog tsim. Tom qab ntawd cov vesicles (nqa cov khoom rau cell phab ntsa synthesis) tuaj txog ntawm lub dav hlau faib. Vesicles fuse los tsim ib lub tubular-vesicular network hu ua cell plate. Tom qab ntawd cov fusion ntawm cov tubules membrane txuas ntxiv mus. Tom qab ntawd, nws hloov mus rau hauv daim ntawv membrane. Tom qab ntawd, lub deposition ntawm cellulose tshwm sim. Tsis tas li ntawd, kev rov ua dua ntawm daim nyias nyias thiab lwm yam khoom siv los ntawm lub xov tooj ntawm tes yuav tshwm sim. Thaum kawg, cov phab ntsa tshiab tsim tawm nrog cov phab ntsa ntawm niam txiv, ua rau kev sib cais ntawm ob tug ntxhais tshiab.

YPhragmoplast yog dab tsi?

Phragmoplast yog cov nroj tsuag ntawm cov qauv tshwj xeeb uas ua rau cov phaj ntawm tes. Nws yog ib qho nyuaj ntawm microtubules, microfilaments, Golgi-derived vesicles, thiab endoplasmic reticulum. Nws tshwm sim thaum lub sij hawm lig anaphase ntawm cell division. Ib zaug tsim, nws ua haujlwm raws li lub hauv paus rau kev sib sau ntawm tes phaj thiab tsim cov phab ntsa tshiab ntawm tes cais ob tus ntxhais cell. Tom qab tsim ib lub cell phab ntsa tshiab, phragmoplast qauv yog dismantled. Li no, qhov tseem ceeb ntawm phragmoplast nyob rau hauv cov nroj tsuag hlwb yog tias nws kho cov cytokinesis ntawm kev tsim ntawm ib lub cell phaj.

Qhov txawv ntawm Phragmoplast thiab Cell Phaj
Qhov txawv ntawm Phragmoplast thiab Cell Phaj

Daim duab 01: Phragmoplast thiab Cell Phaj tsim nyob rau hauv cov nroj tsuag Cell Thaum Cytokinesis

Structurally, phragmoplast yog ib lub thoob-puab los yog cylindrical qauv nrog ib tug dub kab nyob rau hauv nruab nrab cheeb tsam. Nws muaj ob qhov kev tawm tsam ntawm actin filaments thiab microtubules nrog lawv ntxiv xaus rau ntawm qhov chaw nruab nrab.

Cell Phaj yog dab tsi?

Cov phaj ntawm tes yog cov txheej txheem ntawm cov txheej txheem uas ua rau ntawm ob pawg chromosomes nyob rau hauv ib qho kev faib cov nroj tsuag. Nws ua hauj lwm raws li tus precursor rau lub tshiab cell phab ntsa uas yog tsim nyob rau hauv thiaj li yuav cais ob tug ntxhais hlwb. Lub cell phaj tsim los ntawm fusion ntawm me me Golgi derived vesicles uas coalesce nyob rau hauv nruab nrab. Yog li ntawd, vesicles pab txhawb lawv daim nyias nyias los ua cell membranes thiab cov ntsiab lus matrix los tsim cov phab ntsa ntawm tes. Maj mam, lub phaj ntawm tes txuas mus txog thaum nws fuses nrog ob sab ntawm niam txiv cell phab ntsa. Nws tshwm sim vim yog fusion ntawm ntau vesicles ntawm lub midzone. Thaum kawg, cov phab ntsa tsim tshiab tau cais ob tus ntxhais tshiab.

Qhov txawv tseem ceeb - Phragmoplast vs Cell Phaj
Qhov txawv tseem ceeb - Phragmoplast vs Cell Phaj

Daim duab 02: Cell Phaj thiab Phragmoplast

Ntxiv mus, cellulose synthesis tshwm sim nyob rau hauv lub cell phaj thiab lub cell phaj tag nrho transforms mus rau hauv ib tug thawj cell phab ntsa nyob rau hauv lub kawg ntawm cytokinesis. Txawm li cas los xij, muaj plasmodesmata nruab nrab ntawm ob lub hlwb tshiab uas tsim tawm. Qhov tseem ceeb tshaj plaws, phragmoplast yog cov qauv uas ua rau lub cell phaj. Yog li ntawd, kev tsim thiab kev loj hlob ntawm cov phaj cell yog nyob ntawm phragmoplast.

Dab tsi yog qhov zoo sib xws ntawm Phragmoplast thiab Cell Phaj?

  • Phragmoplast thiab cell phaj yog ob qho kev cog cell-specific qauv tsim thaum lub sij hawm cytokinesis.
  • Ob leeg yog cov qauv cytoplasmic.
  • Phragmoplast yog cov qauv uas ua rau cov phaj ntawm tes. Yog li ntawd, kev tsim thiab kev loj hlob ntawm cov phaj cell yog nyob ntawm phragmoplast.
  • Ob leeg phragmoplast thiab cell phaj yog qhov tseem ceeb hauv kev tsim cov phab ntsa cell tshiab ntawm kev faib cov nroj tsuag.
  • Lawv tau tsim ntawm qhov sib npaug ntawm qhov ntxaiv tom qab chromosomes tau faib thaum lub sij hawm anaphase ntawm cov nroj tsuag mitosis.

Qhov txawv ntawm Phragmoplast thiab Cell Phaj yog dab tsi?

Phragmoplast thiab cell phaj yog ob hom kab mob ntawm tes tshwj xeeb. Phragmoplast yog ib qho kev sib koom ua ke ntawm microtubules, microfilaments, Golgi-derived vesicles, thiab endoplasmic reticulum uas ua rau lub cell phaj thaum lub sij hawm cytokinesis. Meanwhile, cell phaj yog daim disk-puab membrane-kawg qauv uas yog lub precursor rau tsim ntawm tshiab cell phab ntsa ntawm ob tug ntxhais hlwb. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm phragmoplast thiab cell phaj. Tsis tas li ntawd, lub phragmoplast yog lub thoob-puab, tab sis lub cell phaj yog flattened thiab disk-puab. Yog li, qhov no qhov sib txawv ntawm cov phragmoplast thiab cell phaj.

Tsis tas li ntawd, phragmoplast tsuas pom muaj nyob hauv phragmoplastophyta xwb, tab sis cov phaj ntawm tes muaj nyob hauv cov nroj tsuag hauv av thiab qee cov algae.

Cov hauv qab no qhia txog qhov sib txawv ntawm phragmoplast thiab cell phaj.

Qhov sib txawv ntawm Phragmoplast thiab Cell Phaj hauv Daim Ntawv Tabular
Qhov sib txawv ntawm Phragmoplast thiab Cell Phaj hauv Daim Ntawv Tabular

Summary – Phragmoplast vs Cell Phaj

Cytokinesis yog cov txheej txheem kawg ntawm kev faib cell uas niam txiv cytoplasm faib ua ob ntu los ntawm kev sib cais cytoplasmic organelles thiab cov genomes duplicated thiaj li tsim tau ob lub hlwb. Cog cell cytokinesis tshwm sim los ntawm kev tsim cov phaj cell. Ib cov qauv ntawm cov nroj tsuag tshwj xeeb hu ua phragmoplast ua rau cov phaj cell. Phragmoplast ua hauj lwm raws li ib tug scaffold rau cell phaj los ua ke. Cell Phaj yog cov qauv ntawm cov phab ntsa flattened tsim nyob rau hauv nruab nrab lub dav hlau ntawm lub cell faib uas ua hauj lwm raws li lub precursor rau lub tshiab cell phab ntsa. Nws tsim los ntawm fusion ntawm Golgi muab tau los ntawm cov hlab ntsha hauv cytoplasm. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm phragmoplast thiab cell phaj.

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