BIOLOGY
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What type of bond holds the nitrogenous bases together?
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peptide bond
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phosphate bond
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ionic bond
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hydrogen bond
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Explanation:
Detailed explanation-1: -Hydrogen bond (H-bond) binds the nitrogen bases between the two strands of DNA. There are two H-bonds between A and T; three H-bonds between G and C.
Detailed explanation-2: -hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components).
Detailed explanation-3: -The two nitrogenous bases are held together by three hydrogen bonds. The first hydrogen bond is found between Oxygen atom of the keto group at C-2 of cytosine and one of the Hydrogen atom of the amino group at C-2 of guanine.
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