Video: Puas yog hydrogen bonds muaj nyob rau hauv macromolecules?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hydrogen bonding hauv biological cov macromolecules . Hydrogen bonds yog cov tsis muaj zog tsis-covalent kev sib cuam tshuam, tab sis lawv cov kev taw qhia xwm thiab ntau ntawm hydrogen - kev sib raug zoo pab pawg txhais tau hais tias lawv ua lub luag haujlwm tseem ceeb hauv cov qauv thiab kev ua haujlwm ntawm cov protein thiab nucleic acids.
Raws li txoj cai, cov ntawv cog lus uas tuav macromolecules ua ke yog dab tsi?
Macromolecules yog cov polymers tsim los ntawm cov subunits hauv ib ntu tshwj xeeb. Covalent bonds tuav lub macromolecule ua ke; noncovalent bonds pab kom nws paub txog lwm cov molecules. RNA thiab DNA nqa cov ntaub ntawv hauv lawv cov kab ke nucleotide. Cov protein quav rau hauv cov duab tshwj xeeb thiab muab lub tsev blocks ntawm tes.
Kuj Paub, cov kua qaub puas muaj hydrogen bonds? Nyob rau hauv lub xub ntiag ntawm dej, carboxylic kua qaub tsis txhob dimerise. Hloov chaw, hydrogen bonds yog tsim los ntawm cov dej molecules thiab tus kheej molecules ntawm kua qaub . Hauv qhov no, cov no tawg hydrogen bonds tsuas yog hloov los ntawm ntau qhov tsis muaj zog ntawm van der Waals dispersion rog.
Ib sab saum toj no, qhov twg hydrogen bonds pom nyob rau hauv biological molecules?
Qhov yooj yim piv txwv ntawm a hydrogen daim ntawv cog lus tuaj yeem yog pom hauv dej molecules . Ib dej molecule muaj ib qho oxygen atom txuas rau ob hydrogen atoms. A hydrogen daim ntawv cog lus tuaj yeem tsim ntawm ob molecules ntawm dej.
Cov ntsiab lus twg tuaj yeem tsim cov ntawv cog lus hydrogen?
Hydrogen daim ntawv cog lus tsuas yog tsim los ntawm peb lub ntsiab lus electronegative heev - fluorine, oxygen thiab nitrogen . Yog li, hydrogen bonding yog ua tau tsuas yog nyob rau hauv cov tebchaw uas cov hydrogen atom yog ncaj qha mus rau fluorine, oxygen los yog nitrogen.
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