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Unit 1 Lesson 1 Name ______________________________________ Date _________ Lesson WS The Characteristics of Cells Choose the letter of the best answer. 1. What term describes the smallest unit that can perform all of the functions necessary for life? 4. Robert Hooke was the first person to describe cells. Which of the following instruments did he use to make his observations? A. a single cell A. B. a cell nucleus C. a cell membrane D. a multicellular organism 2. Eukaryotic cells and prokaryotic cells have some parts in common. Which of the following pairs of parts would you find in both types of cells? B. A. cytoplasm and nucleus B. cell membrane and cytoplasm C. DNA and membrane-bound organelles D. cell membrane and membrane-bound organelles C. 3. According to Theodor Schwann, all parts of organisms are made up of which of the following? A. cells D. B. nuclei C. organs D. organelles 5. What did Robert Virchow observe about cell division? A. Cells have nuclei. B. Cells move around. C. Cells have cell membranes. D. Cells come from other cells. Lesson Quiz © Houghton Mifflin Harcourt Publishing Company 3 Module A • Assessment Guide