Question Detail

BIO 101 BIO 101 Past Questions Objective Question
Take CBT

Question

In DNA hydrogen bonds are formed between
Options
A the phosphate groups
B the 3'-OH and 2'-H
C the 3'-OH and the 5'- phosphate
D the bases
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Hydrogen bonds are the key forces that hold the two strands of the DNA double helix together. They form specifically between complementary nitrogenous bases: adenine (A) with thymine (T) via two hydrogen bonds, and guanine (G) with cytosine (C) via three hydrogen bonds.

Hint

What specifically pairs up in the middle of the double helix?

Question Info

Course: BIO 101
Topic: BIO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1129 of 2556
Previous Course Details Next