Lundkvist Biology 11 Name:________________ Date: _________Blk:____ Bacteria and Virus Review Sheet 1. Viruses that invade bacteria bacteriophage_ 2. When a bacterium grows to twice its normal size and replicates its DNA and divides is called binary fission 3. In this type of viral infection, the DNA of the virus enters the host cell and is inserted into its DNA lysogenic infection 4. Disease causing agents _pathogens__ 5. Cells that do not have a nucleus _prokaryotes_ 6. The smaller group of prokaryotes that tend to live in harsh environments _archaebacteria 7. Rod shaped bacteria _bacilli__ 8. Bacteria that trap the energy of sunlight in a manner similar to green plants phototrophic autotrophs 9. Organisms that require a constant supply of oxygen obligate aerobes 10. The larger group of prokaryotes eubacteria 11. Spherically shaped bacteria _cocci___ 12. Organisms that do not require oxygen and in fact are poisoned by it _obligate anaerobes 13. Form of sexual reproduction in bacteria conjugation 14. Bacteria that live in harsh environments and obtain energy from inorganic molecules chemotrophic autotrophs 15. This is formed when the bacterium makes an extra thick wall during unfavourable conditions _endospore 16. An organism that depends entirely upon another living organism for its existence in such a way that it harms that organism _parasite 17. Spiral shaped bacteria _spirilli___ Group of bacteria that can survive with or without oxygen are called facultative anaerobes 18. A close relationship in which both organisms benefit is called _symbiosis 19. This type of virus invades a cell, reproduces and is scattered when the cell lyses and breaks _lytic virus_ 20. A non-cellular particle made up of genetic material and protein that can invade living cells __virus___ 21. Bacteria that obtain energy buy taking in organic molecules and then break them down and absorb them chemotrophic heterotroph 22. Organisms that use the complex molecules of a once living organism _saprophytes__ 23. Process of changing N2 from the air into NH3 nitrogen fixation 24. Bacteria that use sunlight for energy but also need organic molecules for nutrition phototrophic autotroph 25. Another word for toxin __poison__ 26. Bacteria sometimes propel themselves using a tail called a _flagellum__