Plaque assays are used for
A. evaluating the cancer-causing ability of a virus.
B. determining the density of phage in a culture.
C. the study of prions.
D. cultivating viruses that cannot be grown any other way.
E. counting the number of latent phages in a cell.
Answer: B
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How do fungi in the soil of rain forests encourage plant diversity?
A. By serving as pathogens for particular plant species, fungi encourage plant diversity. B. By serving as pollinators, fungi introduce plant diversity into new regions. C. By forming mycorrizhae with plants, fungi introduce plant diversity into new regions.
A female who is heterozygous for hemophilia will ____
a. exhibit the condition throughout her life b. suffer from bleeding when severely stressed c. show no signs of the disease at all d. pass the gene on to all of her children e. pass the gene on to only her sons
All of the following bacteria are part of the normal flora EXCEPT:
A. Salmonella spp. B. Bacteroids spp. C. Lactobacillus spp. D. Staphylococcus spp. E. Viridans streptococci
During aerobic cellular respiration, glucose is oxidized to ___ and ___
Fill in the blank(s) with the appropriate word(s).