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ANSWER THESE QUESTIONS: C 19 viruses and c 27 Bacteria and Archaea Questions: 1. What is a virus made of? 2. What are common structures associated with viruses (19.3)? 3. What options are there for the viral genome (our genome is double stranded DNA)? 4. If a virus has a viral envelope, where did it come from? 5. What is a phage or a bacteriophage? 6. What are the steps in the lytic cycle? 7. How does the lysogenic cycle differ from the lytic cycle? 8. What is the role of the enzyme ‘reverse transcriptase’ in retroviruses such as HIV ? 9. Does it get an envelope and how would it get one? 10. How do vaccines help against viruses? 11. riddle: A nail you pry off of a board, but an infectious protein you have to _____________? 12. __________________ are not hemoroids in viruses, but are small circles of RNA in plants that act as a virus. C27 1. The reason they are called masters of adaptation is due to this attribute…bacteria… a. have short life cycles b. large number of population in a short time c. transduction, transformation, mutation d. conjugation with other bacteria outside of there genus e. all of these 2. What are the differences between gram positive and gram negative bacteria? 3. Fig 27.4 What is a capsule and what is it for? 4. What is the purpose of an endospore? 5. Transduction involves bacteria picking up DNA from a _______________ ? 6. The F factor is important for _________________? 7. These type of Archaea turn CO2 and H2 into CH4 and live in mud and the stomachs of cows? 8. A halophile can withstand ___________. 9. A thermophile can withstand ______________. 10. What roles do bacteria play in the ecosystem? 11. What is the vector of lyme disease? 12. What is the difference between an endotoxin and an exotoxin? plus ? is class