Which of the following is/are not true about viral envelopes?
A. They are typical lipid monolayers with embedded viral proteins.
B. The envelope proteins are virus specific.
C. The envelope lipids and carbohydrates are derived from the host.
D. The envelope proteins are virus specific and the envelope lipids and carbohydrates are derived from the host.
Answer: A
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A) transcription. B) translation. C) DNA replication. D) protein folding.
Organisms belonging to the genus Brucella are:
a. gram-positive diplococci. b. gram-positive diphtheroid bacilli. c. gram-negative coccobacilli. d. gram-negative bacilli.
What percentage of the species that have ever lived have become extinct?
a. 1 percent b. 9 percent c. 50 percent d. 75 percent e. 99 percent
Fermentation is primarily involved in the recycling of
a. ADP. b. oxygen. c. pyruvate. d. NAD+.