Exam Page 1 Answer Key 1. True or False: A virus is considered a microorganism. False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 2. What is the smallest biological unit of life? A cell. 3. At a generalized level, all cells are comprised of what? Macromolecules* *A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they must answer with all four to be fully correct. Exam Page 2 1. Which of the following microorganisms are considered to be Eukarya? Select all that apply. A. Animalia B. Plantae C. Fungi D. Protista Animalia, Plantae, Fungi, Protista are all eukarya. 2. True of False: All multicellular microorganisms classified as Animalia are heterotrophic. True 3. Microorganisms classified as Plantae obtain most of their energy by converting _____ energy into _______ energy. light; chemical