Goodbye to you my trusted friend. We've known each other since we were nine or ten. Together we've climbed hills and trees. Learned of love and ABC's. Skinned our hearts and skinned our knees. Goodbye my friend it's hard to die. When all the birds are singing in the sky. Now that spring is in the air. Pretty girls are everywhere.
Relevance. Rating Newest Oldest. Best Answer: Hydrogen bonds hold the nitrogen-containing bases of each DNA strand together. Adenine (A) and Thymine (T) are held together by two H-bonds, and Cytosine (C) and Guanine (G) are held together by three.elevance. Rating Newest Oldest. Best Answer: Hydrogen bonds hold the nitrogen-containing bases of each DNA strand together. Adenine (A) and Thymine (T) are held together by two H-bonds, and Cytosine (C) and Guanine (G) are held together by three.
How are nucleotides held together vs how DNA strands in a DNA molecule are held together? The nucleotides are linked together covalently by phosphodiester bonds through the 3'-OH group of one sugar and the 5'-PO3 of the next, into polynucleotide chains. A DNA molecule is composed of two of these polynucleotide chains (DNA strands) which are held together by hydrogen bonds between the paired bases. DNA is wound into a _______ _______.