The largest known fish is:
a. the blue whale.
b. the whale shark.
c. the megamouth shark.
d. the great white shark.
e. the humpback whale.
B
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Which of the following is an example of gene regulation at the posttranslational level?
A. Initiation of protein synthesis B. Alteration of protein structure C. Prevention of RNA synthesis D. Early termination of an mRNA transcript
The minimum sterilizing conditions in a steam autoclave are
A. 160°C for 2 hours. B. 71.6°C for 15 seconds. C. 121°C at 15 psi for 15 minutes. D. 100°C for 30 minutes. E. 63°C for 30 minutes.
To date, the preferred weapons of mass destruction for terrorists have been:
A) nuclear. B) chemical. C) explosive. D) biologic.
Streptomyces differs from Actinomyces because Streptomyces
A) makes antibiotics. B) produces conidia. C) forms filaments. D) is a strict aerobe. E) is a bacterium.