Video: Dab tsi yog hydrogen bonding hauv biology?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A hydrogen daim ntawv cog lus yog electromagnetic attraction ntawm polar molecules nyob rau hauv uas hydrogen yog khi rau lub atom loj, xws li oxygen lossis nitrogen. Qhov no tsis yog kev sib koom ntawm electrons, zoo li hauv covalent daim ntawv cog lus . Hloov chaw, qhov no yog qhov kev nyiam ntawm qhov zoo thiab qhov tsis zoo ntawm cov atom raug nqi.
Tsis tas li, qhov twg hydrogen bonds tshwm sim hauv biology?
Hydrogen bonds tshwm sim nyob rau hauv inorganic molecules, xws li dej, thiab organic molecules, xws li DNA thiab proteins. Ob qho tib si txuas ntxiv ntawm DNA yog tuav ua ke los ntawm hydrogen bonds ntawm cov nucleotides ntxiv (A&T, C&G).
Ib yam li ntawd, vim li cas hydrogen bonding tseem ceeb hauv biology? Hydrogen bonding yog tseem ceeb hauv ntau cov txheej txheem tshuaj. Hydrogen bonding yog lub luag hauj lwm rau dej cov kuab tshuaj tshwj xeeb muaj peev xwm. Hydrogen bonds tuav cov kab sib txuas ntxiv ntawm DNA ua ke, thiab lawv yog lub luag haujlwm rau kev txiav txim siab peb-dimensional qauv ntawm folded proteins nrog rau cov enzymes thiab cov tshuaj tiv thaiv.
Tsis tas li ntawd, piv txwv li hydrogen bond yog dab tsi?
hydrogen daim ntawv cog lus . npe. Lub ntsiab txhais ntawm hydrogen daim ntawv cog lus yog tshuaj daim ntawv cog lus nruab nrab ntawm hydrogen atom thiab electronegative atom. Ib piv txwv ntawm hydrogen daim ntawv cog lus yog dej molecules kev sib raug zoo ua ke nyob rau hauv daim ntawv ntawm dej khov.
Yuav ua li cas yog hydrogen bond tsim?
A hydrogen daim ntawv cog lus yog tsim thaum qhov zoo kawg ntawm ib lub molecule yog attracted rau qhov tsis zoo kawg ntawm lwm tus. Lub tswvyim zoo ib yam li magnetic attraction qhov twg opposite ncej nyiam. Qhov no ua rau hydrogen ib qho hluav taws xob zoo atom vim nws muaj qhov tsis txaus ntawm electrons.
Pom zoo:
Puas yog ib qho tsis muaj polar molecule puas muaj hydrogen bonding?
Yog hais tias lub molecule tsis yog polar, ces tsis muaj kev sib cuam tshuam dipole-dipole los yog hydrogen bonding tuaj yeem tshwm sim thiab tsuas yog ua tau intermolecular quab yuam yog lub zog van der Waals tsis muaj zog
Cov ntsiab lus twg tuaj yeem koom nrog hauv hydrogen bonding?
Hydrogen bonding tuaj yeem tshwm sim ntawm hydrogen thiab plaub lwm yam. Oxygen (feem ntau), Fluorine, Nitrogen thiab Carbon. Cov pa roj carbon yog qhov tshwj xeeb uas nws tsuas yog sib cuam tshuam hauv hydrogen bonding thaum nws raug khi rau cov khoom electronegative heev xws li Fluorine thiab Chlorine
Dab tsi yog Qhov Ib Feem Cuam Tshuam ntawm cov khoom hydrogen hauv cov methane ch4 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus los ntawm Element Element Symbol Mass Percent Hydrogen H 25.132% Carbon C 74.868%
Puas yog fluoromethane muaj hydrogen bonding?
Tsis tas li ntawd, cov molecule tsis muaj hydrogen atoms sib txuas rau nitrogen, oxygen, lossis fluorine; txiav txim tawm hydrogen bonding. Thaum kawg, muaj ib qho dipole tsim los ntawm qhov sib txawv ntawm electronegativity ntawm carbon thiab fluorine atoms. Qhov no txhais tau tias fluoromethane molecule yuav muaj zog dipole-dipole
Puas yog n2 muaj hydrogen bonding?
Nitrogen (N2) yog ib qho tsis-polar molecule thiab tsuas yog tsim nyob rau lub lim tiam London dispersion rog ntawm nws cov molecules. Dej yog ib qho polar molecule uas tsim muaj zog hydrogen bonds ntawm nws cov molecules. Yog tias N2 tuaj yeem tsim hydrogen bonds nrog dej, nws yuav yog dej soluble heev