Question

one coiled spring is shown in the diagram. a teacher modeled part of a dna molecule using two of these coiled springs. what part of the dna molecule was the teacher most likely modeling? options: protein, gene, nitrogen base, backbone

Explanation:

DNA has a double - helix structure, and the coiled spring can be used to model the backbone of the DNA molecule. The backbone of DNA is made up of alternating sugar and phosphate groups, and its overall structure is a long, continuous, and somewhat coiled (in the context of the double - helix) structure. A protein is a different macromolecule with a different structure, a gene is a segment of DNA, and a nitrogen base is one of the components that pair in the middle of the DNA double - helix, not the part modeled by a coiled spring.

Answer:

backbone