Final answer:
The component not found in DNA is amino acids. Peptides are chains of amino acids that are not part of DNA's structure, which consists of antiparallel strands, a phosphate group, a pentose sugar, and hydrogen bonds.
Step-by-step explanation:
D) amino acids. Peptides, which are chains of amino acids, are not associated with the structure of DNA. DNA consists of antiparallel strands, a phosphate group, a pentose sugar (deoxyribose), and hydrogen bonds that contribute to its double helix structure. In the context of DNA, a peptide would refer to a short chain of amino acids, which is the building block of proteins and not a component of DNA itself.
Specifically, the structure of DNA is based on nucleotides, which comprise a 5-carbon sugar (deoxyribose), a phosphate group, and a nitrogenous base. These nucleotides are arranged in two strands that run in opposite directions, known as being antiparallel. The strands are held together by hydrogen bonds between complementary nitrogenous bases. The sequence of bases along a DNA strand encodes genetic information, while peptides are part of protein synthesis and are synthesized based on this genetic code, but are not a structural component of DNA.
The structure of DNA is composed of several components, including peptides, antiparallel strands, phosphate, pentose sugar, and hydrogen bonds. However, peptides are not associated with the structure of DNA.