One difference between human cheek cells and onion cells is the presence of cytoplasm the absence of a nucleus in the onion cells the absence of a cell wall in cheek cells none of the above

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.