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Multiple Choice
The nitrogenous base adenine is found in all members of which of the following groups of molecules?
A
DNA and RNA
B
Proteins and lipids
C
Enzymes and vitamins
D
Carbohydrates and lipids
Verified step by step guidance
1
Identify the structure of adenine, which is a purine nitrogenous base with the chemical formula C₅H₅N₅.
Understand that adenine is one of the four nucleobases in the nucleic acids of DNA and RNA, where it pairs with thymine in DNA and with uracil in RNA.
Recognize that proteins, lipids, enzymes, vitamins, carbohydrates, and lipids do not contain adenine as a structural component.
Recall that DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are the primary molecules that contain adenine as part of their nucleotide structure.
Conclude that adenine is found in DNA and RNA, as these are the nucleic acids that incorporate adenine as a fundamental component of their structure.