Question

what do adenine, cytosine, guanine, thymine, and uracil have in common?
○ they are all found in rna.
○ they are all found in dna.
○ they make up the enzymes found in all organisms.
○ they make up the nucleic acids found in all organisms.

Explanation:

• Adenine, cytosine, guanine are present in both DNA and RNA. Thymine is unique to DNA, and uracil is unique to RNA. Together, these five nitrogenous bases are the building blocks that form nucleic acids (DNA and RNA), which are present in all living organisms.
• The first option is incorrect because thymine is not found in RNA.
• The second option is incorrect because uracil is not found in DNA.
• The third option is incorrect because enzymes are primarily made of proteins, not these nitrogenous bases.

Answer:

D. They make up the nucleic acids found in all organisms.