Question

the structure of dna resembles a twisted ladder. which structural components form the rungs of the ladder?
○ deoxyribose sugars
○ phosphate groups
○ nitrogenous base pairs
○ ribosomes

Explanation:

DNA's double helix structure has a backbone made of deoxyribose sugars and phosphate groups, which form the "sides" of the twisted ladder. The "rungs" are formed by complementary nitrogenous base pairs (adenine-thymine, guanine-cytosine) that connect the two backbones via hydrogen bonds. Ribosomes are cellular structures unrelated to DNA's ladder rungs.

Answer:

nitrogenous base pairs