Qhov tsis muaj ob daim ntawv cog lus txo qis fluidity, ua rau daim nyias nyias muaj zog heev thiab sib tw nruj. Unsaturated fatty acids muaj tsawg kawg yog ob daim ntawv cog lus, tsim kom muaj "kink" hauv cov saw hlau. Ob daim ntawv cog lus nce fluidity. Membrane fluidity kuj cuam tshuam los ntawm cov cholesterol.
Dab tsi yuav txo qhov fluidity thiab permeability ntawm cell membrane?
Nyob rau hauv cov tsiaj, cholesterol nce daim nyias nyias kom txo tau cov kua dej thiab permeability. Cov fatty acids tails ntawm phospholipids kuj cuam tshuam rau daim nyias nyias fluidity. Fatty acids tuaj yeem sib txawv ntawm qhov ntev, thiab tus lej ntawm ob daim ntawv cog lus hauv cov saw hlau hydrocarbon.
Dab tsi ua rau muaj dej ntawm cov cell membrane?
Qhov mosaic ntawm daim nyias nyias, nws cov phospholipid chemistry, thiab muaj cov roj cholesterolpab txhawb rau cov membrane fluidity.
Yuav ua li cas rau daim nyias nyias ntawm qhov kub thiab txias?
Tsuas Kub Stiffens lub Membrane
Thaum qhov kub thiab txias, fatty acid tails ntawm phospholipids txav tsawg thiab ua nruj dua Qhov no txo qis tag nrho cov kua dej ntawm daim nyias nyias., kuj txo nws cov permeability thiab muaj peev xwm txwv tsis pub nkag mus ntawm cov molecules tseem ceeb xws li oxygen thiab qabzib rau hauv lub cell.
Yuav ua li cas hauv qab no yuav zoo li ua kom cov kua dej ntau ntxiv?
Qhov kev xaiv uas yuav ua rau kom cov cell membrane fluidity yog A. ntau dua qhov feem ntawm cov roj fatty acids tsis txaus.
