In DNA, the base pair held together by three hydrogen bonds is ___.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Study for the Biochemistry Module 6 Exam. Study with flashcards and multiple choice questions; each question includes hints and explanations. Gear up to ace your test!

Multiple Choice

In DNA, the base pair held together by three hydrogen bonds is ___.

Explanation:
Base pairing in DNA is stabilized by hydrogen bonds between complementary bases. Adenine pairs with thymine using two hydrogen bonds, while guanine pairs with cytosine using three hydrogen bonds. The pair held together by three hydrogen bonds is cytosine and guanine. This extra bond makes GC-rich regions more thermally stable and contributes to a higher melting temperature. Note that uracil is found in RNA (where it pairs with adenine), not in DNA, so a guanine–uracil pairing isn’t a standard DNA base pair.

Base pairing in DNA is stabilized by hydrogen bonds between complementary bases. Adenine pairs with thymine using two hydrogen bonds, while guanine pairs with cytosine using three hydrogen bonds. The pair held together by three hydrogen bonds is cytosine and guanine. This extra bond makes GC-rich regions more thermally stable and contributes to a higher melting temperature. Note that uracil is found in RNA (where it pairs with adenine), not in DNA, so a guanine–uracil pairing isn’t a standard DNA base pair.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy