Why is DNA called a macromolecule by scientists? A.)because the nucleotide bases in DNA contain nitrogen atoms which make it large B.)because DNA is a massive polymer that contains many different parts C.)because DNA is made of one large, complex molecule of sugar D.)because purines and pyrimidines connect in DNA to make it a large molecule

B.)because DNA is a massive polymer that contains many different parts

Explanation:

DNA is also called Deoxyribonucleic acid and it is important in knowing the genetic composition of organisms. The DNA comprises of phosphate, a sugar called deoxyribose, and four nitrogenous base which are adenine, guanine, cytosine, and thymine.

These constituents named above form a long chain which could be in millions and billions. This is why it is regarded to as a macromolecule because it is a massive polymer that contains many different parts .

who knows

explanation:

is in the form atp or adenosine triphosphate