If a disease affects only a human and not an animal, then it would be difficult to fulfill Koch's postulate number
A. 1.
B. 2.
C. 3.
D. 4.
C
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The three-dimensional structure of a functional protein composed of a single polypeptide chain is referred to as the ____________ structure
A. primary B. secondary C. tertiary D. quaternary
The incubation period of leprosy is
A. 1 week. B. 3 weeks. C. 3 months. D. 3 or more years
Albinism (lack of skin and hair pigmentation) is caused by a recessive autosomal allele. A woman and man, both normally pigmented, have an albino child together. For this trait, what is the genotype of the albino child?
a) it is heterozygous b) it is homozygous recessive c) it is homozygous dominant d) it is unknown because not enough information is provided e) it depends on the sex of the child
If global warming makes the southeastern United States warmer but does not change the amount of rainfall, we might expect to see a shift from the present temperate deciduous forest biome to
A) alpine tundra. B) tropical rain forest. C) chaparral. D) northern coniferous forest. E) tropical deciduous forest.