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
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple 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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