Vary in the number of neutrons but Sama in the number if protons are called isotopes
The heart needs molecule don’t take me serious cause it might be wrong
Organelle,The primary role of the flagellum is locomotion but it also often has function as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure.
D) Robert Hooke first discovered cells when observing cork under the microscope.
