Why are infections caused by viruses so much more difficult to treat or cure than those caused by bacteria?
What will be an ideal response?
Responses should discuss the nature of viruses and bacteria: Viruses are not alive, but instead exist inside the host organism's cells. Therefore viruses cannot be killed like bacteria (at least not without killing the host cells). Treatment of viral infections usually involves neutralizing the products of the viral DNA (or RNA) (i.e., the enzymes or other proteins for which the viral genes code).
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Which organisms would MOST likely be isolated from aerobic growth conditions with acetate and a soil sample heated to 80 °C for 10 min?
A) aerobic or facultative anaerobic acetogens B) endospore-forming bacteria C) hyperthermophilic heterotrophic bacteria D) mycoplasmas
You created a worm that expresses a human Bcl-2 transgene, and you are crossing the transgene into a homozygous ced-9 mutant background. However, you inadvertantly used a clone of Bcl-2 with a mutation in the BH domain, which is essential for function. What results do you expect for the ced-9 mutants with the mutant Bcl-2 transgene?
A. 131 cells will die. B. All 1090 cells will die. C. All 1090 cells will live. D. 959 cells will die. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the apoptosis pathway? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Transgenic bacteria are bacteria:
a. that only have trans-DNA. b. that have hybridized with other species of bacteria. c. found in the DNA of other organisms. d. that have a sequence of DNA from another organism inserted into them. e. that produce genes used in recombinant DNA technology.
This term describes the amount of carbon dioxide a person puts into the atmosphere.
A) Skin cancer B) Carbon footprint C) Age structure D) Emigration E) Desertification F) Chlorofluorocarbon G) Ozone H) Carrying capacity I) Density-dependent J) Death rate