QUIZ: THE BACTERIAL DOMAINS Name ____________________________________ Date _____________________ Period ____________ QUIZ: THE BACTERIAL DOMAINS Directions: Place all your answers directly on this quiz. For free-response questions, use the space provided to write your answer. Make sure that what you write actually answers all parts of the question. For multiple-choice questions, write the letter of your answer on the line provided at the right. Do not leave any answers blank or numbers naked. Blank questions will be marked off at twice the rate of a wrong answer. Good luck, have fun, and learn much! 0. What celebrity do you think would make a nifty bio techer? 1. Name one structure that bacterial cells and plant cells have in common. 2. What is the structure that allows bacteria to survive long periods of time in adverse conditions? A. Spore B. Endometrium C. Gizzard D. Boroplast _________ 3. What is the difference between a gram-positive and a gram-negative bacterium? 4. What is the purpose of the sex pilus of a bacterium? 5. What are the small rings of DNA called that bacteria can trade during sexual reproduction? A. DNA-O’s B. Plasmids C. Cosmids D. Extra-cellular DNA _________ 6. Identify and explain one advantage to reproducing asexually. 7. Identify and explain one advantage to reproducing sexually. 8. What structures to bacteria NOT have? A. Ribosomes B. Cell membranes C. Mitochondria D. Cell Walls _________

9. How do bacteria take food items into their cells 9. How do bacteria take food items into their cells? You may write, draw or both. 10. Some bacteria can get by without using any type of cellular respiration; they can just do fermentation. Why can they get away with this, while something like a giraffe could not? 11. Identify one difference between Archeabacteria and Eubacteria. 13. Why are bacteria “simple,” but not “primitive?” A. They have had just as long as humans and other organisms to evolve, and they are very well-adapted to their environment. B. They can’t do everything that humans and other organisms do. C. Bacteria have cell walls but no cell membranes, so they can’t move around as well as other organisms. D. Bacteria can only reproduce asexually, so they can’t get as much variation, and therefore there is no evolution of bacteria. _________ 14. How do bacteria grow? 15. THINK CAREFULLY. Doctors often prescribe antibiotics when a bacterium such as Streptococcus pyrogenes, the bacterium that causes strep throat, infects a human. With increasing and alarming rates, however, these bacteria are becoming resistant to many of the common antibiotics that are prescribed. In a few, well-structured sentences, address the following points: What feature of bacteria allows them to develop a resistance to antibiotics so quickly? How do you think antibiotics work? That is, what can they do to kill bacterial cells, but not harm human cells? Are bacteria completely to blame for their increasing resistance to antibiotics? Are humans doing anything to allow them to become more and more resistant?