Multiple Choice
In the context of DNA structure, DNA is made up of repeating subunits called what?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
Which sugars are found in DNA and RNA, respectively?
A
DNA contains deoxyribose, and RNA contains ribose.
B
Both DNA and RNA contain ribose.
C
Both DNA and RNA contain deoxyribose.
D
DNA contains ribose, and RNA contains deoxyribose.
Verified step by step guidance1
Step 1: Understand the structure of nucleic acids. DNA and RNA are both nucleic acids composed of nucleotides, which include a sugar, a phosphate group, and a nitrogenous base.
Step 2: Identify the sugar component in DNA. DNA contains a sugar called deoxyribose, which differs from ribose by lacking one oxygen atom on the 2' carbon.
Step 3: Identify the sugar component in RNA. RNA contains ribose, which has a hydroxyl group (-OH) attached to the 2' carbon, making it chemically distinct from deoxyribose.
Step 4: Compare the sugars in DNA and RNA. The key difference is that DNA has deoxyribose (missing one oxygen), while RNA has ribose (with the oxygen present).
Step 5: Use this knowledge to select the correct answer: DNA contains deoxyribose, and RNA contains ribose.
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