Multiple Choice
Which of the following units are repeatedly joined together to form a strand of DNA?
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4. Biomolecules
Nucleic Acids
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The four nitrogenous bases commonly found if DNA are:
A
Adenine, thymine, cytosine, uracil
B
Uracil, adenine, cytosine, guanine.
C
Uracil, cytosine, guanine, thymine.
D
Adenine, thymine, cytosine, guanine.
E
None are correct.
Verified step by step guidance1
Identify the four nitrogenous bases that are found in DNA. These are adenine (A), thymine (T), cytosine (C), and guanine (G).
Understand that uracil (U) is not found in DNA; it is found in RNA instead, where it replaces thymine.
Review the options provided in the problem to determine which set of bases includes adenine, thymine, cytosine, and guanine.
Recognize that the correct set of nitrogenous bases for DNA is adenine, thymine, cytosine, and guanine.
Conclude that the correct answer is the option that lists adenine, thymine, cytosine, and guanine as the four nitrogenous bases found in DNA.
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