Correct: The sun is the center of the solar system. It is mostly gas. It is the most massive object in the solar system.
Nucleic acids because the DNA of a organic compound is part of the nuculis family
the flagellum helps the cell to move through water. Scientists think that the flagellum and the light-sensitive spot work together to increase photosynthesis. Light sensitive spot detects light.
I researched this! Hope it helps!