1) The smallest unit of life is the ____ a) cell b) homeostasis c) organism d) protein 2) Which of the following is NOT a necessary characteristic of a living thing? a) It is made up of cells. b) It eats food to get energy. c) It grows and develops. d) It responds to stimuli. 3) Which of the following is a multicellular organism? a) bacterium b) amoeba c) mouse d) paramecium 4) Which statement is true? a) Cells come in different shapes, but are all about the same size—very, very small. b) Cells come in different shapes and sizes. c) Cells all have the same shape, but come in different sizes. d) Cells are all the same shape and size—small and rounded 5) Which correctly describes a difference between prokaryotic and eukaryotic cells? a) Only prokaryotic cells have vacuoles. b) Eukaryotic cells are smaller than prokaryotic cells. c) Prokaryotic cells have many organelles, each with their own specialized functions. d) Only eukaryotic cells have their genetic material surrounded by a lining.

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