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.
B
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Water leaving an efficient wastewater treatment facility ideally has a biochemical oxygen demand (BOD) between ________ units
A) 50 and 100 B) 25 and 50 C) 5 and 25 D) 0 and 5
Which of the following viral components is
NOT typical of a plant virus?
a. RNA b. protein coat c. helical structure d. viral envelope e. more than one of these is NOT typical of a plant virus
The plasma membrane is composed of a phospholipid bilayer and associated proteins. What else is commonly found in the plasma membranes of animal cells?
A) amino acids B) ethanol C) cholesterol D) nucleic acids
The best explanation for why a mouse develops into a mouse and not a human is
A. the genes are mostly the same but have been rearranged. B. synteny has not been conserved. C. most of the non-coding genes are different. D. most of the coding genes are different. E. gene expression differs.