Archaeal cell walls ________.

A. are disrupted by treatment with lysozyme or penicillin
B. are similar to those of Gram-negative bacteria
C. are unlike bacterial cells; they all have the same composition
D. lack murein and D-amino acids


Answer: D

Biology & Microbiology

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The key difference between incomplete dominance and codominance is

a. with incomplete dominance, the recessive allele cannot be detected; in codominance, the expression of the recessive allele is apparent. b. with incomplete dominance it is possible to detect the expression of a recessive allele; in codominance, both alleles contribute equally to the phenotype. c. with codominance it is possible to detect the expression of a recessive allele; in incomplete dominance, both alleles contribute equally to the phenotype. d. with incomplete dominance, it is possible to detect the expression of the dominant allele; in codominance, both alleles contribute equally to the phenotype. e. the two terms mean the same thing.

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The person credited with being the co-discoverer of

evolution by natural selection was a. Alfred Wallace. b. Charles Lyell. c. Thomas Malthus. d. James Hutton. e. John Henslow.

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Oxygen-poor blood circulates through

a. A. b. B. c. C. d. D. e. A, C, and E.

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What is the specialized branch of mathematics that is used to compare data?

A) epidemiology B) computational mathematics C) cross-sectional mathematics D) statistics

Biology & Microbiology