Multiple Choice
Which type of bond is responsible for holding together the nucleotides within a single strand of DNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
The two strands of nitrogenous bases in DNA are joined by which type of bond?
A
Phosphodiester bonds
B
Disulfide bonds
C
Hydrogen bonds
D
Ionic bonds
Verified step by step guidance1
Recall the structure of DNA, which consists of two strands forming a double helix.
Understand that each strand is made up of nucleotides connected by phosphodiester bonds along the sugar-phosphate backbone.
Focus on the interaction between the two strands: the nitrogenous bases from each strand pair with each other.
Identify the type of bond that holds these nitrogenous bases together across the two strands; these are weak, non-covalent bonds that allow the strands to separate during processes like replication.
Recognize that these bonds are hydrogen bonds, which form between complementary base pairs (adenine-thymine and guanine-cytosine) in DNA.
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