Download 1. D Bacteria are unicellular organisms. They are made up of only

1. D Bacteria are unicellular organisms. They are made up of only one cell. Humans are multicellular organisms. They are made of billions of cells. 2. B Unicellular organisms have all of their needs met within one cell. 3. D Unicellular organisms are so small that most of them can only be seen through a microscope. 4. C Amoeba, bacteria, euglena, and paramecium are all examples of unicellular organisms. 5. B Unicellular organisms perform all of life’s basic processes within one cell. They reproduce, grow, adapt, react, and use energy. Some can make their own food. This can only be done if the cell contains chloroplast. 6. C Cells group together to form tissues; tissues group together to form organs; organs group together to form organ systems. 7. C Humans are multicellular organisms. They have billions of cells. All of these cells work together to complete life processes. 8. C Characteristics of living things include being made of cells, responding to the world around them, adapting to the environment, use of energy, and growth. 9. D Cells group together to form tissues; tissues group together to form organs; organs group together to form organ systems. 10. D Multicellular organisms have systems of cells to perform life processes. Unicellular organisms can survive on their own. All of their life processes are carried out in one cell. 11. C Amoeba change shape to move. They stretch out. The stretched portions of their bodies used for movement are known as false feet. The scientific word for false feet is pseudopod. 12. A Euglena are single celled organisms. They have a tail like structure used for movement. The tail like structure is called a flagella. 13. B Paramecium is a single celled organism. It is covered in hair like structures. They are used for movement. The hair like structures are call cilia. 14. A The scientific word for false feet is pseudopod. 15. B Unicellular organisms include bacteria, euglena, paramecium, and amoeba.