Rodents are the normal hosts for which of the following encephalitis viruses?
A) eastern equine encephalitis (EEE)
B) St. Louis encephalitis
C) Venezuelan equine encephalitis (VEE)
D) western equine encephalitis (WEE)
E) West Nile virus
C
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In the system of binomial nomenclature, species are assigned a two-part name: the first part is the ____ and the second
part is the ____name.
a. species; genus b. genus; species c. species; family d. genus; family e. family; species
Reduction means
A. the gain of electrons by a molecule. B. the loss of oxygen from a cell. C. the gain of oxygen by a cell. D. the gain of oxygen and an electron. E. the loss of electrons by a molecule.
If a tree has flower petals that are small and the same color as its leaves, it is likely to be pollinated by
a) the wind. b) butterflies. c) moths. d) bees. e) bats.
Assume that a mutation occurs in the gene responsible for the production of hexosaminidase A, such that only about 50% of the enzyme activity is found in the heterozygote compared with a homozygous normal individual. If heterozygotes are phenotypically
normal, we would say that the mutant allele is ________ to its normal allele. A) epistatic B) auxotrophic C) recessive D) dominant E) gain of function