I NEED HELP "ASAP"!!!!! PLEASE
Which of the following describes a cell structure that a Gram-negative bacterium has that a Gram-positive bacteria does not have?
A. An extra layer that is outside the peptidoglycan layer of the cell wall
B. A membrane-bound mitochondrion in which energy for the cell is made
C. An electrically charged sugar molecule that is attracted to sodium ions
D. A membrane-enclosed nucleus in which DNA is stored and protected