Alfredo looks at a thin scraping of a lettuce leaf under the microscope. He identifies certain cell structures he had learned about in class. He recognizes plant cells have some structures that are different from animal cells. What structures might he see in a plant cell that would not be present in an animal cell? Choose the three that apply. A. cell wall B. cell membrane C. chloroplasts D. large vacuoles E. ribosomes F. mitochondria