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Biology Study Guide 18 Viruses, Prions, Archaebacteria, Eubacteria SB3 Rev. 07-15-15 Online Textbook: Viruses and Bacteria Name __________________________ Period __________________________ Date____________________________ Write the complete correct definition for each term. -25 for incomplete, blank, or silly answers. A. archaebacteria _____________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ B. bacteria __________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ C. binary fission ______________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ D. capsid ___________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ E. capsule ___________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ F. conjugation _______________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ G. endospore ________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ H. eubacteria ________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ I. lysogenic cycle _____________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ J. lytic cycle _________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ K. nucleoid __________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ L. pilus _____________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ M. prion ____________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ N. retrovirus _________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ O. virus _____________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Also know: Viruses have three different patterns of replication. Nitrogen-fixing bacteria in the root nodules of legumes (peas, peanuts, etc.) are able to remove inert diatomic nitrogen from the air and convert it into a form that plants can use. Mutations may cause normal proteins to change shape, and to become disease-causing prions. Viruses are classified by their genetic material. Antibiotics may work to control bacterial infections, but are useless against viruses. Most scientists do not consider a virus to be a living organism because a virus is a protein capsule with genetic material, either DNA or RNA, and it has no cell of its own. A virus has to invade the cells of a living organism to replicate itself.
