Cytosine yog ib qho ntawm plaub lub tsev thaiv DNA thiab RNA. Yog li nws yog ib qho ntawm plaub nucleotides uas muaj nyob hauv DNA, RNA, thiab txhua cytosine ua ib feem ntawm txoj cai. Cytosine muaj cov cuab yeej tshwj xeeb uas nws khi hauv ob lub helix opposite ib guanine, ib qho ntawm lwm cov nucleotides.
Cytosine ib txwm khi nrog dab tsi?
Nyob hauv DNA, adenine ib txwm ua khub nrog thyine thiab cytosine ib txwm ua nrog guanine. Cov khub no tshwm sim vim geometry ntawm lub hauv paus, s cia hydrogen bonds tsim tsuas yog ntawm cov "txoj cai" khub. Adenine thiab thymine yuav tsim ob daim ntawv cog lus hydrogen, thaum cytosine thiab guanine yuav tsim peb daim ntawv cog lus hydrogen.
Lub hauv paus uas khi rau cytosine yog dab tsi?
Base Pair
Ob txoj hlua tau tuav ua ke los ntawm hydrogen bonds ntawm lub hauv paus, nrog adenine ua ib khub hauv paus nrog thymine, thiab cytosine ua ib khub nrog guanine.
Puas muaj pes tsawg daim ntawv txuas cytosine thiab guanine hauv DNA molecule?
Cytosine thiab guanine daim ntawv peb hydrogen bonds ntawm ib leeg, thaum tyrosine thiab adenine tsim ob hydrogen bonds. Peb tsuas yog yuav tsum suav pes tsawg ntawm txhua lub hauv paus peb muaj thiab ntau cytosine thiab guanine los ntawm peb, thiab thymine thiab adenine los ntawm ob.
Vim li cas cytosine ib txwm ua ke nrog guanine?
Guanine thiab cytosine ua ib khub nitrogenous puag vim lawv muaj hydrogen daim ntawv cog lus pub dawb thiab hydrogen daim ntawv lees txais khubnrog rau ib leeg hauv qhov chaw. Guanine thiab cytosine tau hais kom ua tiav rau ib leeg. Qhov no yog qhia hauv daim duab hauv qab no, nrog cov ntawv cog lus hydrogen qhia los ntawm cov kab dotted.
