1. Which of the following tructures can only be found in a plant cell?, a. centrioles, b. mitochodrion, c. chloroplast, d. nucleus, 2. The ff. parts are all present in an animal cell, except, a. cell membrane, b. cell wall, c. centrioles, d. ribosomes, 3. Which of the ff. cell structures are present in both plants and animals?, a. cell wall, b. chloroplast, c. centrioles, d. nucleus