BIOMOLECULES AND ENZYMES

Detailed explanation-1: -DNA double helix. Hydrogen bonds break and helix opens. Each strand of DNA acts as a template for synthesis of a new, complementary strand. Replication produces two identical DNA double helices, each with one new and one old strand.

Detailed explanation-2: -DNA replication is semiconservative, meaning that each strand in the DNA double helix acts as a template for the synthesis of a new, complementary strand. This process takes us from one starting molecule to two “daughter” molecules, with each newly formed double helix containing one new and one old strand.

Detailed explanation-3: -It is true that each DNA molecule has one new and old strand but it doesn’t occur every other strand. Semiconservative replication produces copies of DNA that contain one of the original strands.

Detailed explanation-4: -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.

Detailed explanation-5: -These results were consistent with the semiconservative model of replication and the reality that, when DNA replicated, each new double helix was built with one old strand and one new strand.