AP BIOLOGY

Detailed explanation-1: -Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing. These hydrogen bonds are individually weak but collectively quite strong. a template during DNA replication.

Detailed explanation-2: -Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. Duplication of the genetic information occurs by the use of one DNA strand as a template for formation of a complementary strand.

Detailed explanation-3: -The 2 strands of DNA are held together by hydrogen bonds between N2 bases.

Detailed explanation-4: -Answer and Explanation: The two strands of a DNA molecule are held together by hydrogen bonds between their base pairs. The base pairs refer to the nitrogenous bases found in the interior of DNA: adenine, cytosine, guanine, and thymine.

Detailed explanation-5: -Answer and Explanation: The answer is B: hydrogen bonds are easier to break allowing for DNA copying. Hydrogen bonds formed between complementary base pairs on opposite DNA strands form the “rungs on a ladder” portion of DNA’s double-helical structure.