Video: Puas yog porins zog nyob ntawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tetracyclines raug thauj mus rau hauv cov kab mob gram-tsis zoo los ntawm kev sib kis tsis zoo los ntawm cov kab dej hydrophilic tsim los ntawm cov porin proteins ntawm cov cell membrane sab nrauv thiab los ntawm kev thauj mus los ntawm txoj kev. zog - nyob system uas tso lawv hla cytoplasmic membranes.
Ua kom pom qhov no, porins hauv cov kab mob gram tsis zoo yog dab tsi?
General kab mob porins yog ib tsev neeg ntawm cov proteins los ntawm cov txheej membranes ntawm Gram - kab mob tsis zoo . Lawv yog lub luag haujlwm rau 'molecular sieve' cov khoom ntawm cov txheej membrane. Porins tsim cov dej loj loj uas tso cai rau kev nthuav tawm ntawm hydrophilic molecules mus rau hauv qhov chaw periplasmic.
Tsis tas li ntawd, porins nyob qhov twg? Porins . Porins yog proteins uas yog nyob nyob rau hauv daim nyias nyias ntawm Gram-negative kab mob. Lawv ua haujlwm los tsim cov dej ntim dej los ntawm daim nyias nyias, los ntawm sab nrauv mus rau periplasm, uas yog ib cheeb tsam. nyob nruab nrab ntawm sab nrauv thiab sab hauv daim nyias nyias.
Yog li, cov porins puas xaiv tau?
Porins yog cov dej puv pores thiab cov channel pom nyob rau hauv daim nyias nyias ntawm cov kab mob thiab eukaryotes. Ob hom ntawm porins muaj nyob rau thauj cov khoom sib txawv - dav thiab xaiv . General porins tsis muaj qhov tshwj xeeb ntawm cov substrate, txawm tias qee qhov kev nyiam me ntsis rau anions lossis cations.
Vim li cas ho tsis feem ntau cov kab mob Gram zoo muaj Porins?
Gram zoo hlwb muaj tsis muaj daim nyias nyias. ( Porins yog OUTER membrane channels) C. Lawv xav tau porins tso cai ions los ntawm cov tuab peptidoglycan txheej. (+0.5: G+ cells DO muaj Teichoic acids thiab tuab PG, tab sis cov no muaj tsis muaj dab tsi ua nrog ' porins.
Pom zoo:
Puas yog nws muaj tseeb tias nyob rau hauv kev thauj mus los ntawm kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog?
Hauv kev thauj mus los passive, kev txav ntawm cov khoom hla ib daim nyias nyias yuav tsum muaj zog. _ Muaj tseeb_ 5. Endocytosis yog ib txoj kev uas ib lub cell membrane nyob ib puag ncig thiab siv cov khoom los ntawm ib puag ncig. Ib daim nyias nyias uas tso cai rau qee cov ntaub ntawv dhau los qhia txog kev xaiv permeability
Dab tsi yog qhov txawv ntawm lub zog siv zog thiab lub zog thauj khoom?
Raws li nrog cov dav hlau inclined, cov khoom yuav tsum tau txav mus los yog lub zog muaj zog los yog thauj khoom thiab kev siv zog yog lub zog muab tso rau hauv kev txav mus los ntawm lwm qhov kawg ntawm lub fulcrum
Dab tsi yog cov qauv ntawm lub zog nyob rau hauv lub peev xwm thiab lub zog kinetic?
Lub zog muaj peev xwm yog khaws cia lub zog thiab lub zog ntawm txoj haujlwm - lub zog gravitational. Muaj ntau hom kev muaj peev xwm muaj zog. Kinetic zog yog kev txav - ntawm nthwv dej, electrons, atoms, molecules, tshuaj, thiab khoom. Chemical Zog yog lub zog khaws cia hauv cov khoom sib txuas ntawm atoms thiab molecules
Puas yog lub zog hauv daim ntawv ntawm kev txav yog lub zog muaj peev xwm?
Lub zog nyob rau hauv daim ntawv ntawm kev txav yog 'muaj peev xwm' zog. Qhov ntau dua 'mas' ib qho khoom txav muaj, lub zog kinetic nws muaj. Lub pob zeb ntawm ntug pob tsuas muaj 'kinetic' zog vim nws txoj hauj lwm. 'Thermal' zog yog lub zog khaws cia los ntawm cov khoom uas ncab los yog compression
Puas yog chemical zog yog ib daim ntawv ntawm lub zog muaj peev xwm?
Tshuaj muaj peev xwm muaj peev xwm yog ib daim ntawv ntawm lub zog muaj peev xwm cuam tshuam nrog kev teeb tsa ntawm atoms lossis molecules. Qhov kev npaj no yuav yog qhov tshwm sim ntawm cov khoom siv tshuaj lom neeg hauv ib lub molecule lossis lwm yam. Chemical zog ntawm ib yam tshuaj muaj peev xwm hloov mus rau lwm yam ntaub ntawv ntawm lub zog los ntawm ib tug tshuaj tiv thaiv