Lub cell membrane BBC Bitesize yog dab tsi?
Lub cell membrane BBC Bitesize yog dab tsi?

Video: Lub cell membrane BBC Bitesize yog dab tsi?

Video: Lub cell membrane BBC Bitesize yog dab tsi?
Video: Transport in Cells: Diffusion and Osmosis | Cells | Biology | FuseSchool 2024, Kaum ib hlis
Anonim

Cell membrane . Nws cov qauv yog permeable rau qee yam khoom tab sis tsis yog rau lwm tus. Yog li ntawd, nws tswj kev txav ntawm cov khoom hauv thiab tawm ntawm cov khoom cell . Mitochondria. Organelles uas muaj cov enzymes rau kev ua pa, thiab qhov twg feem ntau lub zog tawm hauv kev ua pa.

Piv txwv li, cell membrane ua li cas?

Cov cell membrane tswj kev txav ntawm cov khoom hauv thiab tawm hlwb thiab organelles. Nyob rau hauv txoj kev no, nws yog xaiv permeable rau ions thiab organic molecules.

Tsis tas li ntawd, lub xovtooj yooj yim txhais li cas? Cov cell (los ntawm Latin cella, lub ntsiab lus "chav me") yog lub hauv paus structural, functional, thiab biological unit ntawm tag nrho cov paub kab mob. A cell yog qhov tsawg tshaj plaws ntawm lub neej. Cells feem ntau hu ua "lub tsev blocks ntawm lub neej". Kev kawm ntawm hlwb hu ua cell biology, cellular biology, los yog cytology.

Ib yam li ntawd, nws yog nug, dab tsi yog lub cell membrane ua ks3?

Cell membrane - qhov no puag ncig lub cell thiab tso cai rau cov as-ham nkag mus thiab pov tseg kom tawm mus. Nws muaj DNA, cov ntaub ntawv ntawm caj ces hlwb yuav tsum loj hlob thiab yug me nyuam. Cytoplasm - qhov no yog ib yam khoom zoo li jelly nyob rau hauv cov tshuaj tiv thaiv tshwm sim. Mitochondria - cov no yog lub zog ntawm lub cell.

Tus qauv ntawm lub cell membrane yog dab tsi?

Phospholipids tsim cov hauv paus qauv ntawm lub cell membrane , hu ua lipid bilayer. Kev tawg ntawm cov lipid bilayer yog cov roj cholesterol molecules, uas pab kom cov daim nyias nyias kua dej sib xws. Membrane cov proteins yog ib qho tseem ceeb rau kev thauj khoom thoob plaws hauv lub cev cell membrane.

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