VI. Solve the following crossword puzzle using the clues below

Across:

1a kingdom of unicellular, colonial, or multicellular organisms usually including the protozoans and most algae; 3 a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease; 4 a kingdom of prokaryotic unicellular round, spiral, or rod-shaped single-celled microorganisms that are often aggregated into colonies or motile by means of flagella, that live in soil, water, organic matter, or the bodies of plants and animals; 6a category of taxonomic classification ranking above the family and below the class; 9 a category of biological classification ranking between the family and the species, comprising structurally or phylogenetically related species; 12 a major category in biological taxonomy ranking above the order and below the phylum or division; 13 a group that constitutes one of the usually primary divisions of the animal kingdom; 14 an organism that lives in the absence of free oxygen; 15 an organism capable of performing life functions only in the presence of oxygen; 16 a group of related plants or animals forming a category ranking above a genus and below an order and usually comprising several to many genera; 17 a category of biological classification ranking immediately below the genus or subgenus, comprising related organisms or populations potentially capable of interbreeding.

Down:

1a protein particle that lacks nucleic acid and is believed to be the cause of various infectious diseases of the nervous system; 2 an organism living together with another dissimilar organism in a mutually beneficial relationship; 3 a complete virus particle that consists of an RNA or DNA core with a protein coat sometimes with external envelopes and that is the extracellular infective form of a virus; 5 any of a major group of saprophytic and parasitic spore-producing organisms usually classified as plants that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts; 7 an organism living in, with, or on another organism and obtaining benefits from the host which it usually injures; 8 the DNA-containing area of a prokaryotic cell; 10 an organism living on dead or decaying organic matter; 11 any of various enzymes that promote hydrolysis of nucleic acids.

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<== попередня сторінка	\|	наступна сторінка ==>
Discussion	\|	VII. Using additional sources of information prepare a report on one of the following topics and present it to the class

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