How many codons exist in the genetic code?
a. 3
b. 9
c. 16
d. 64
e. 128
ANSWER: d
Biology & Microbiology
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When an enveloped virus adsorbs to the host cell with its protein spikes, the virions are taken into the cell by the process of
A. penetration. B. production. C. fusion. D. endocytosis.
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The first person acknowledged to have seen
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