Muaj tsib lub hauv paus nitrogenous; adenine, guanine, thymine, cytosine thiab uracil. Nucleotides koom ua ke los ntawm covalent bonds ntawm pawg phosphate ntawm ib nucleotide thiab thib peb carbon atom ntawm pentose qab zibhauv nucleotide tom ntej.
Dab tsi yog nitrogenous puag txuas rau hauv nucleotide?
Txhua nucleotide yog tsim los ntawm peb yam: nitrogenous puag, pentose (tsib-carbon) qab zib, thiab phosphate pawg (Daim duab 1). Txhua lub hauv paus nitrogenous hauv cov nucleotide yog txuas rau cov piam thaj molecule, uas txuas rau ib lossis ntau pawg phosphate.
Lub npe ntawm daim ntawv cog lus ntawm nitrogenous puag thiab pentose qab zib yog dab tsi?
Ob nucleotides txuas los ntawm kev sib txuas ntawm phosphodiester los tsim ib lub dinucleotide. Yog li, cov lus teb raug yog Kev Xaiv B (Glycosidic Bond) Ib daim ntawv cog lus glycosidic lossis glycosidic linkage yog ib hom kev cog lus cog lus uas koom nrog cov carbohydrate (qab zib) molecule rau ib pawg sib txawv, uas tuaj yeem lossis tsis tuaj yeem ua lwm yam carbohydrate.
Yuav ua li cas daim ntawv cog lus txuas mus rau pentose hauv nucleotide?
Txhua nucleotides muaj cov qauv sib xws: pawg phosphate txuas los ntawm a phosphoester daim ntawv cog lusrau pentose (tsib-carbon qab zib molecule) uas nyob rau hauv lem yog txuas mus rau ib tug organic puag. (Daim duab 4-1a).
Dab tsi txuas cov nitrogenous hauv paus rau ib leeg?
Lub hauv paus nitrogen yog tuav ua ke los ntawm hydrogen bonds: adenine thiab thymine tsim ob daim ntawv cog lus hydrogen; cytosine thiab guanine tsim peb daim ntawv cog lus hydrogen.
