le of biorense diasion io use of prokaryotes to treat awage or clesn up on sps s
ID: 3165270 • Letter: L
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le of biorense diasion io use of prokaryotes to treat awage or clesn up on sps s1 The produczion od antiblotics by cubtured prokaryoies e appieation of becteria to praduce trenagerie planks ED AW af the above. a) Bacteria may be A) free-lving organisms ?) parasites E AN of the above. 9) Seed plants lack which of the following structures? A) Ovules surrounded by interguments a) Microspores and megaspores C) Vascular tissues D) A large, nutritlonaly independent sporophyte E) A large nutritionally independent gametophyte 10) The female gametangium, orproduce an ege n produce sperm cells e male garnstangium A) Antheridium; archegonium 8) Archegonium; magaphyll Archegonium; antheridium D) Magasporangium; antheridium E) Magasporagium, megaphyll. 11) The pistil has three sections: A) Stigma; style; and anther. B) Anther,; filament; and ovule CStigma; style; and ovary. D) Ovary; ovule; and sepal. E) Corolla, stamen; and sepal.Explanation / Answer
6. The lytic cycle of bacteriophage infection ends with the E) rupture of the bacterium. The steps in the lytic cycle occur in the following order : adhesion of the bacteriophage to the bacterial cell wall, injection of phage DNA into the host cell, replication of phage DNA, assembly of viral particles into phages, rupture of the bacterium and release of the phages.
7. Bioremediation is a process by which organisms are used to degrade contaminants from the environment. The answer choice A (usage of prokaryotes to treat sewage or clean up an oil spill) is an example of bioremediation.
8. Bacteria may be free-living (grow independent of other organisms), saprophytes (live on dead or decomposing organic matter), parasites (live inside or on a host and is dependent on the host) or nitrogen-fixers (convert atmospheric nitrogen into inorganic compounds that can be used by plants). Bacteria are all of the above (E).
10. The gametophyte produces the sex organs called gametangia. The female gametangium is called archegonium (C). It produces the egg. The male gametangium is called the antheridium (C). It produces the sperm cells.
11. The pistil, the female reproductive organ of the flower consists of stigma, style and ovary.
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