29) In a bacterium that possesses antibiotic resistance and the potential to per

Question

29) In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezing, drying or high temperatures. DNA should be located within, or be part of which structures? 1. nucleoid region 2. endospore 3. fimbriae. 4. plasmids A) 1only B) 1 and 2 only. C) 1 and 4 only D) 2 and 4 only E) 1,2, and 4 only. 30) An example of an emerging virus "( a virus in a new host)" with a lethality rate in excess of50% is A) influenza. B) Ebola virus C) Hepatitis B. D) Variola virus E) Yelloe fever 31) What is the primary ecolopical role of prokaryetes? A) parasitizing eukaryotes, thus causing diseases B) breaking dows organic matter C) metabolizing materials in extreme environments D) adding methane to the atmosphere E) serving as primary producers in terrestrial environments 32) What is the goal of bioremediation? A) B) C) to improve human health with the help of living organisms such as bacteria. to clean up areas polluted with toxic compounds by using bacteria to improve soil quality for plant growth by using bacteria. D) to improve bacteria for production of usefudl chemicah 33) which of the following pairs of protists and their characteristics is mismatched? A) apicomplexans-internal parasites 8) golden algae-planktonic producers C) euglenozoans-unicellular flagelilates D) cliates-red tide organisms E) entamoebas-ingestive heterotrophs h not present in all bacteria, this cell covering often enables cels that possess it to resist the 34.) Althoug defenses of host organisms, especially their phagocytic cells. A) endospore. B) sex pllus. C) capsule. D) flagellum. E) cell wal

Explanation / Answer

29) The answer is E. 1, 2 and 4 only.

Explanation

Nucleoid protects DNA from damage by using DNA binding proteins. Plasmid protects DNA from adverse conditions due to antibiotic resistance. Endospores protect DNA from dessication, temperature, drying or freezing.

30. The answer is B. Ebola virus.

Explanation

It is a virus that causes severe bleeding, organ failure and can lead to death. Thus its lethality rate is more than 50%.

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