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Multiple Choice
Which of the following is not part of a nucleotide in a DNA molecule?
A
Deoxyribose sugar
B
Amino acid
C
Nitrogenous base
D
Phosphate group
Verified step by step guidance
1
Understand the structure of a nucleotide: A nucleotide in DNA consists of three main components: a deoxyribose sugar, a nitrogenous base, and a phosphate group.
Identify the components listed in the problem: The options given are deoxyribose sugar, amino acid, nitrogenous base, and phosphate group.
Recall the role of amino acids: Amino acids are the building blocks of proteins, not nucleotides. They are involved in protein synthesis rather than forming the structure of DNA.
Compare the components: Deoxyribose sugar, nitrogenous base, and phosphate group are all integral parts of a nucleotide in DNA, whereas amino acids are not.
Conclude which component is not part of a nucleotide: Based on the comparison, identify that amino acids are not part of the nucleotide structure in DNA.