How many strands of nucleotides are in a DNA molecule?

Answer 1

There are two strands of DNA in a DNA double helix, each consisting of many nucleotide subunits. They are like building blocks that make up the DNA molecule, which would then be like a block tower. A 'strand of nucleotides' as you put it would basically be a DNA molecule (if they are deoxyribose nucleotides) or if they are ribose nucleotides, they would be a RNA molecule. DNA can come in double stranded helices (most of the time) or can be single stranded (as in some viruses).