Your science teacher asks you to build a model of a cell. The model should look like a city, and buildings in the city should represent parts of a typical cell. Each building's real-life function should be like the function of the organelle it represents. For example, the vacuole of a cell, which stores water, could be a water tower in your cell city model.
Explain which building should represent the nucleus?
A) factory:manufacturing
B) city hall:control center
C) power plant:provides energy
D) highways and streets:transportation

city hall- control center

Explanation:

The nucleus is always known to be the control center for the cell because it performs two main principle functions. The nucleus controls the the cellular activities just like the mayor of city hall can control what's going on in his city. They also play an important part in the replication process of genetic information.

the answer to your question is b

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.