Bacteria and Virus Review Sheet

Biology 11
Date: _________Blk:____
Bacteria and Virus Review Sheet
1. Viruses that invade bacteria
2. When a bacterium grows to twice its normal size and replicates its DNA and divides is
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
5. Cells that do not have a nucleus
6. The smaller group of prokaryotes that tend to live in harsh environments
7. Rod shaped bacteria
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
11. Spherically shaped bacteria
12. Organisms that do not require oxygen and in fact are poisoned by it
_obligate anaerobes
13. Form of sexual reproduction in bacteria
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
16. An organism that depends entirely upon another living organism for its existence in such a
way that it harms that organism
17. Spiral shaped bacteria
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
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
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
26. Bacteria sometimes propel themselves using a tail called a