7. DNA and Chromosome Structure

In a DNA strand, how can you identify the 5' and 3' ends based on the chemical structure of the sugar-phosphate backbone?

The nucleotides in the backbone of the DNA strand are held together by what type of bond?

In the context of DNA structure, what are the three chemical components of a single DNA nucleotide?

Which nitrogenous bases are found in a strand of DNA?

Which set correctly lists the four nitrogenous bases found in DNA?

Which of the following best describes the structure of a DNA molecule?

Which structural component is found in DNA but not in RNA?

In DNA, which nitrogenous base always pairs with adenine (A) according to complementary base-pairing rules?

In the context of DNA structure, DNA (deoxyribonucleic acid) is classified as which type of biomolecule?

Which set correctly lists the four nitrogenous bases found in DNA?

Which set correctly lists the four nitrogenous bases found in DNA?

In a strand of DNA, which type of bond connects the nucleotides within the same strand?

In DNA structure, which nitrogenous base forms complementary base-pairing with cytosine (C)?

In the DNA double helix, what type of interaction holds complementary bases together across the two strands?

In DNA structure, what sugar is found in the backbone of DNA nucleotides?