A(n) ________ organism require(s) oxygen for growth.
A. anaerobic
B. facultative anaerobic
C. aerotolerant
D. obligate aerobic
E. aerotolerant and an anaerobic
Answer: D
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Microorganisms that grow in extreme environments typically contain larger genomes when compared to microbes that grow in non-extreme environments
Indicate whether the statement is true or false.
You are studying a newly identified infectious disease within a population. Think of the typical graph of the course of infection--incubation period through to convalescent period. The new disease reveals a course of infection characterized by fluctuating symptoms, with intermittent periods of invasion (acute period) between prodromal periods. The whole course of infection occurs over a period of months or even years. Based upon the information presented, select the statement that most accurately reflects this new infectious disease.
A. The host has immune problems and this is the typical course of a disease for that population. B. Viral infections always present with this type of disease course. C. This infectious disease exhibits latency. D. This is not an infectious disease at all.
The hindwing eyespots of the butterfly Bicyclus anyana responded to artificial selection for increased gold color in both or increased black color in both, but artificial selection could not produce increased gold in one spot and increased black in
the other. This is an example of ________. A) homoplasy B) heterochrony C) genetic linkage D) orthologous genes E) constraint
Viruses that attack bacteria are called
A. lytic B. proviruses C. virulent D. phages