The intermediate disturbance hypothesis says that species richness is least in a community that has
moderate disturbances.
Indicate whether the statement is true or false.
ANS: F, greatest
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Match the following items with the correct phrases.
_______1. An arachnid ectoparasite; one species causes human scabies; larval forms of some species are referred to as “chiggers.” _______2. An insect ectoparasite; the vector of plague. _______3. An arachnid ectoparasite; the vector of Rocky Mountain spotted fever. _______4. Pediculus humanus var. corporus; an infestation with these insects is known as pediculosis; in the trenches in World War I, these were known as “cooties.” _______5. An insect called Phthirus pubis. _______6. An arachnid ectoparasite; the vector of Lyme disease. a. body louse b. “crab” louse c. flea d. mite e. tick
Can a virus be killed?
A. Yes, destroying its genome kills it. B. No, viruses are capable of self-assembly and cannot be permanently killed. C. Yes, separating the genes from the capsid kills it. D. No, viruses are non-living and cannot die. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about viruses as organisms? 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?
__________ are characterized by two types of nuclei, a macronucleus and a micronucleus.
Fill in the blank(s) with the appropriate word(s).
Wild type bread mold can grow in a minimal medium without supplements, while certain mutated strains can only grow in a minimal medium that is supplemented with specific intermediates. See the figure below for an overview of the arginine biosynthetic pathway.A strain that can grow in a minimal medium containing arginine, but NOT in minimal media containing citrulline nor in minimal media containing ornithine would have a mutation in the gene that encodes for ________.
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A. enzyme 2. B. enzyme 1. C. both enzymes 2 and 3. D. both enzymes 1 and 3. E. enzyme 3.