BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Nucleotides that make the DNA strands contain deoxyribose sugar, phospate molecule and one nitrogenous base out of adenine, guanine, thymine and cytosine. Uracil is never a part of nucleotide of DNA.

Detailed explanation-2: -A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.

Detailed explanation-3: -A pentose sugar (either deoxyribose in DNA or ribose in RNA), a phosphate group, and a nitrogenous base make up a nucleotide. Nitrogen bases include adenine, guanine (purines), and thymine (pyrimidine). An amino acid is not found in a nucleotide.

Detailed explanation-4: -A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA).

Detailed explanation-5: -Structurally, amino acids are the building blocks of proteins. On the other hand, nucleotides are the building blocks of nucleic acids; DNA and RNA. Therefore, this is the key difference between amino acid and nucleotide.