Explain how species that are not closely related can look or behave so similarly. Give an example
What will be an ideal response?
Responses should discuss how a particular environment or lifestyle selects for certain traits and that distantly related species may have similar adaptations for that environment. Should also discuss the meaning of the term "convergent evolution." Example: flight selects for wings, light weight, streamlined body, high metabolism (birds and bats)
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Which of the following is TRUE of exotic
species?
a. In general, exotic species do not have predators in their new location. b. An exotic species is a species that evolved in one region but has been introduced to and become established in another. c. An exotic species is often untroubled by competitors. d. An exotic species is often untroubled by parasites and diseases. e. All of these are true.
In a ________ assay, DNA extracted from a microbial community or environmental sample is incubated with selected complementary probe or sample sequences (often ________) and allowed to hybridize. The level of hybridization to each probe (gene) is measured. Analysis of DNA hybridization thus reveals the presence or absence of the specific genes in the environment. Most importantly, this can be done without ________.
What will be an ideal response?
The oxidation-reduction cofactor in the multisubunit enzyme fumarate reductase in E. coli which has the greatest reduction potential is
A) FAD. B) iron clusters. C) ubiquinone. D) menaquinone. E) NADH.
Which is false?
-Rem sleep parasomnias are more likely to emerge during the later portion of the sleep period -upon awakening from Rem parasomnia, an individual is typically alert and has vivid recollection of dream content and mental activity -muscle atonia is always present during REM parasonias, as it is a characteristic of REM -all of the above are true