Vacuoles <span>can be used by cells to store energy, form biological membranes, and serve as chemical messengers</span>
The answer is (B) Brain. This is because the brain is a part of what is known as the nervous system just as the lungs are part of what is known as the respiratory system.
Deoxyribose is the sugar that is found in a nucleotide.
The answer would be white dwarf
