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Dab tsi yog qhov ua haujlwm ntawm lub cell membrane?
Dab tsi yog qhov ua haujlwm ntawm lub cell membrane?

Video: Dab tsi yog qhov ua haujlwm ntawm lub cell membrane?

Video: Dab tsi yog qhov ua haujlwm ntawm lub cell membrane?
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Qhov tseem ceeb kev ua haujlwm ntawm plasma membrane yog los tiv thaiv cell los ntawm nws ib puag ncig. Ua los ntawm ib tug phospholipid bilayer nrog embedded proteins, lub plasma daim nyias nyias yog xaiv permeable rau ions thiab organic molecules thiab tswj kev txav ntawm cov khoom hauv thiab tawm ntawm hlwb.

Hais txog qhov no, 4 lub luag haujlwm tseem ceeb ntawm lub cell membrane yog dab tsi?

Tshuaj lom neeg daim nyias nyias muaj peb lub luag haujlwm tseem ceeb : (1) lawv khaws cov tshuaj lom neeg tawm ntawm lub cell ; (2) lawv muaj cov receptors thiab cov channel uas tso cai rau cov molecules tshwj xeeb, xws li ions, as-ham, pov tseg, thiab cov khoom lag luam metabolic, uas cuam tshuam cov cellular thiab extracellular kev ua ub no kom dhau ntawm organelles thiab nruab nrab ntawm cov khoom.

Kuj Paub, tus qauv ntawm lub cell membrane thiab nws txoj haujlwm yog dab tsi? Cov cell membrane yog multifaceted daim nyias nyias lub hnab ntawv a cell cov cytoplasm. Nws tiv thaiv kev ncaj ncees ntawm cov cell nrog rau kev txhawb nqa cell thiab pab tswj lub cell cov puab. Proteins thiab lipids yog cov khoom tseem ceeb ntawm cov tshuaj cell membrane.

Ib sab ntawm no, dab tsi yog tsib lub luag haujlwm ntawm lub cell membrane?

Cov ntsiab lus hauv cov teeb no (5)

  • tiv thaiv lub cell los ntawm kev ua raws li kev thaiv.
  • tswj kev thauj khoom hauv thiab tawm ntawm tes.
  • tau txais chemical messengers los ntawm lwm lub cell.
  • ua raws li receptor.
  • cell mob, secretions, thiab absorptions ntawm cov khoom.

Dab tsi ua rau lub cell membrane?

Phospholipids ua lub hauv paus qauv ntawm a cell membrane . Qhov kev npaj ntawm phospholipid molecules ua cov lipid bilayer. Phospholipids ntawm a cell membrane yog teem rau hauv ob txheej hu ua lipid bilayer. Lub taub hau hydrophilic phosphate yeej ib txwm npaj kom lawv nyob ze dej.

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