Endocytosis tshwm sim thaum ib feem ntawm cov cell membrane folds rau ntawm nws tus kheej, encircling extracellular kua thiab ntau yam molecules los yog microorganisms. Cov vesicle tshwm sim tawg tawm thiab thauj mus rau hauv lub cell.
Lub cell membrane ua li cas thiaj ua rau endocytosis?
Endocytosis yog txheej txheem ntawm ntes cov khoom lossis cov khoom tawm sab nraud ntawm tes los ntawm engulfing nrog cell membraneCov membrane folds hla cov khoom thiab nws dhau los ntawm daim nyias nyias.. Thaum lub sij hawm no, ib lub hnab ntim hauv daim nyias nyias, los yog vesicle, txiav tawm thiab txav cov tshuaj mus rau hauv cytosol.
Puas cell membrane ua endocytosis?
Cells ingest kua, molecules, thiab hais los ntawm endocytosis, nyob rau hauv lub zos cheeb tsam ntawm lub plasma membrane invaginate thiab pinch tawm mus tsim endocytic vesicles. Ntau ntawm cov endocytosed molecules thiab particles xaus rau hauv lysosomes, uas lawv degraded.
YYuav ua li cas rau cov cell membrane thaum exocytosis?
Nyob rau hauv exocytosis, cov khoom pov tseg yog ntim rau hauv daim nyias nyias thiab fuses nrog rau sab hauv ntawm cov plasma membrane. Qhov fusion no qhib lub hnab ntawv membranous ntawm sab nrauv ntawm lub xov tooj ntawm tes thiab cov khoom pov tseg raug tshem tawm mus rau hauv qhov chaw extracellular.
exocytosis koom nrog hauv kev tsim cov cell membrane li cas?
Exocytosis yog txheej txheem siv los ntawm cell tshem tawm nws cov thoob khib nyiab thiab sib txuas cov proteins rau hauv cov cell membrane. Thaum lub sij hawm exocytosis, phospholipid bilayer ntawm lub cell membrane nyob ib ncig ntawm cov pov tseg proteins, tsim ib tug npuas zoo li qauv hu ua ib tug vesicle.
