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:

In the DNA double - helix structure, the sides of the "ladder" are made of alternating deoxyribose sugars and phosphate groups. The nitrogenous base pairs form hydrogen bonds between the two strands and are located in the middle, making up the rungs of the DNA "ladder". Ribosomes are involved in protein synthesis and are not part of the DNA structure.

Answer:

C. nitrogenous base pairs