oices: Write the letter of your answer on the er, f the following about chloroplast are correct E a. They synthesize sugar b. They contain pigment c. They are only found in plants d. They appear green because of chlorophyl is the outermost boundary of an animal cel a. the cell membrane c. the nuc b. the cellwall d. The cyt un: brain; cell: a. cytoplasm b. mitochrondria C. nuc