Question

One coiled spring is shown in the diagram.

A teacher modeled part of a DNA molecule using two of these coiled springs.

Which part of the DNA molecule was the teacher most likely modeling?

protein
gene
nitrogen base
backbone

Answer 1

Backbone

Step-by-step explanation:

Answer 2

Spring can be considered as backbone of the DNA.(as picture is missing there)

Step-by-step explanation:

In DNA double helical model two main structure are there-

1- Backbone consist of phosphate group and the pentose sugar. It is like two vertical columns of a ladder. In helical structure two complementary stands are there one is 3' to 5' and another one is 5' to 3'.

2- Nitrogenous bases are like horizontal bars of ladder attaching two vertical strands. There are 4 kinds of nitrogenous base ADENINE , THYMINE , GUANINE , and CYTOSINE. One more nitrogenous base URACIL is also there but found in RNA not in DNA.

DNA is made of nucleotide and a nucleotide molecule is made of pentose sugar(deoxyribose) ,phosphate group and nitrogenous base.