Which of the following is sometimes useful against viral infections?

A. Azidothymidine
B. Streptomycin
C. Rifampin
D. Trimethoprim


Answer: A

Biology & Microbiology

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Halogen-containing organic compounds persist in the environment for approximately five years

a. True b. False Indicate whether the statement is true or false

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Which brain waves are emitted while dreaming?

a. alpha waves b. beta waves c. delta waves d. gamma waves e. theta waves

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El NiƱo episodes typically last for

a. 1 to 2 months. b. 4 to 8 months. c. 6 to 8 months. d. 6 to 18 months. e. 1 to 2 years.

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Chitin is a chemical component of the cell walls of

A. bacteria. B. algae. C. fungi. D. protozoa. E. All of these choices are correct.

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