The __________ biome is found in states such as Iowa, Minnesota, Nebraska, and other Midwestern
states, and is characterized by thick, rich soils, and a thick mat of sod.
a. savannah
b. tallgrass prairie
c. taiga
d. temperate deciduous forest
e. chaparral
B
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The Black Death was caused by which microbial species?
A. Serratia marcescens B. Escherichia coli C. Saccharomyces cerevisiae D. Yersinia pestis E. Staphylococcus aureus
Which of the following is true of the integration of a viral genome into the host chromosome?
A. Integration begins the process of host chromosome degradation. B. Integration of the viral genome is a form of site-specific recombination. C. The enzymes that are used in integration are nonspecific for the virus and its host. D. All of the choices are correct.
Organismal genetics observes the heredity of the whole organism.
a. true b. false
A 0.1 ml sample of a log phase culture contains 10,000 bacterial cells/ml. It is added to 9.9 ml of fresh culture medium broth. Assume a generation time of 30 minutes, and no limiting nutrients. How many bacteria will be present in the entire broth culture after five hours?
A. 3.2 × 104 B. 5.0 × 105 C. 1.02 × 106 D. 6.0 × 106 E. 2.56 × 107