Final answer:
The component not found in a cell's nucleic acids is uracil deoxyribonucleotides, since DNA contains thymine instead of uracil.
Step-by-step explanation:
The component that would NOT normally be found as a component of a cell's nucleic acids is uracil deoxyribonucleotides (E).
Nucleic acids come in two varieties: ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). RNA contains ribose, a phosphate group, and the nitrogenous bases adenine, cytosine, guanine, and uracil. In contrast, DNA contains deoxyribose, a phosphate group, and the nitrogenous bases adenine, cytosine, guanine, and thymine, not uracil. Therefore, uracil deoxyribonucleotides would not be found in DNA, as DNA contains thymine in place of uracil.