How many hydrogen bonds connect adenine and thymine?

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 $9.99Unlock all

Dive into DAT Bootcamp Molecules and Fundamentals of Biology. Engage with multiple choice questions featuring hints and explanations. Elevate your understanding and excel in your exam!

Multiple Choice

How many hydrogen bonds connect adenine and thymine?

Explanation:
In DNA, base pairing is guided by hydrogen bonds between complementary bases. Adenine pairs with thymine using two hydrogen bonds. One bond forms between adenine’s N6 amino group (which donates a hydrogen) and thymine’s O4 carbonyl; the other forms between adenine’s N1 nitrogen (which accepts a hydrogen) and thymine’s N3–H. This two-bond connection helps stabilize the A–T pair and contributes to the DNA double helix structure. By contrast, guanine pairs with cytosine through three hydrogen bonds, so A–T connections involve two bonds.

In DNA, base pairing is guided by hydrogen bonds between complementary bases. Adenine pairs with thymine using two hydrogen bonds. One bond forms between adenine’s N6 amino group (which donates a hydrogen) and thymine’s O4 carbonyl; the other forms between adenine’s N1 nitrogen (which accepts a hydrogen) and thymine’s N3–H. This two-bond connection helps stabilize the A–T pair and contributes to the DNA double helix structure. By contrast, guanine pairs with cytosine through three hydrogen bonds, so A–T connections involve two bonds.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy