객관식
In nucleic acids, what molecules form the backbone of DNA and RNA?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
A nucleotide of DNA may contain which of the following?
A
Deoxyribose sugar, a phosphate group, and a nitrogenous base
B
Deoxyribose sugar, an amino acid, and a nitrogenous base
C
Glycerol, two fatty acid tails, and a phosphate group
D
Ribose sugar, a phosphate group, and uracil
검증된 단계별 안내1
Recall the basic structure of a DNA nucleotide, which consists of three main components: a sugar, a phosphate group, and a nitrogenous base.
Identify the type of sugar present in DNA nucleotides. DNA contains deoxyribose sugar, which differs from ribose sugar found in RNA.
Recognize the nitrogenous bases in DNA, which include adenine, thymine, cytosine, and guanine. Note that uracil is found only in RNA, not DNA.
Understand that the phosphate group is a common component linking the sugar molecules in the DNA backbone.
Evaluate each option by checking if it contains deoxyribose sugar, a phosphate group, and a nitrogenous base to determine the correct answer.
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