Which of the following antiviral drug categories is incorrectly matched with its description?
A) Nucleotide reverse transcriptase inhibitors: Target retroviruses
B) Nucleoside analogs: Mimic normal nucleotides interfering with nucleic acid replication
C) Interferons: Used for postexposure prophylaxis
D) Proteases: Target protein-cutting enzymes which make mature virons
E) Antisense antivirals: Short sequences of nucleotides that are complementary to viral RNA
Answer: C
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a. 700,000 km b. 70,000 km c. 7,000 km d. 700 km e. 70 km
NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life. Which of the following is good evidence for the presence of bacterial cells?
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a. dinosaur b. monkeys c. frogs d. bacteria e. human
The barbed (fast growing) end of actin filaments is located in muscle
a. at the AI junction. b. near the M line of a contracted sarcomere c. at the inner margin of the AI zone d. at the Z disc e. none of the above