Which of the following bacterial genera is useful for sewage treatment?
A. Burkholderia
B. Thiobacillus
C. Neisseria
D. Zoogloea
E. Nitrosomonas
Answer: D
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Which type of nutrient can pass across epithelial cells without any expenditure of ATP?
A. iron B. calcium C. protein D. fat E. magnesium
A population in Hardy-Weinberg equilibrium
a. consists of allele frequencies that are constantly changing. b. is under no selective pressures. c. consists of genotype frequencies that are constantly changing. d. is very common in nature. e. requires a small population size.
The masseter muscles originate on your cheekbones and insert into the posterior corners of the mandible (the lower jaw bone) underneath your ears. Will contraction of the masseter muscles open or close your jaw?
A. Close B. Open
Which of the following countries has the most
extensive family-planning program? a. United States b. Brazil c. China d. Japan e. Pakistan