Which bases are purines? (Alternate wording)

Study effectively for your Chemistry of Biology Test. Use flashcards, answer multiple-choice questions, and access hints with explanations. Prepare thoroughly for success!

Multiple Choice

Which bases are purines? (Alternate wording)

Explanation:
Purines are a type of nitrogenous base with two fused rings, which makes them larger than the single-ring pyrimidines. The purines in both DNA and RNA are adenine and guanine. The other bases listed—cytosine, thymine, and uracil—are all pyrimidines with one ring. So the bases that are purines are adenine and guanine. (In general, A pairs with T or U, and G pairs with C, but the key idea here is the two-ring structure that defines purines.)

Purines are a type of nitrogenous base with two fused rings, which makes them larger than the single-ring pyrimidines. The purines in both DNA and RNA are adenine and guanine. The other bases listed—cytosine, thymine, and uracil—are all pyrimidines with one ring. So the bases that are purines are adenine and guanine. (In general, A pairs with T or U, and G pairs with C, but the key idea here is the two-ring structure that defines purines.)

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy