Multiple Choice
In the structure of DNA, which sugar is found in the nucleotide backbone?
30
views
7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In double-stranded DNA, what type of chemical bonds hold complementary nitrogenous bases together across the two strands?
A
Peptide bonds
B
Glycosidic bonds
C
Hydrogen bonds
D
Phosphodiester bonds
Verified step by step guidance1
Understand the structure of double-stranded DNA: it consists of two strands forming a double helix, where nitrogenous bases pair across the strands.
Recall that the backbone of each DNA strand is made of sugar and phosphate groups connected by phosphodiester bonds, which link nucleotides within the same strand.
Identify the bonds that connect the nitrogenous bases from one strand to the complementary bases on the opposite strand.
Recognize that these connections are not covalent bonds like peptide or glycosidic bonds, but rather weaker, non-covalent interactions called hydrogen bonds.
Conclude that hydrogen bonds specifically hold complementary nitrogenous bases (adenine with thymine, and cytosine with guanine) together across the two DNA strands.
Related Videos
Related Practice
