A key feature of all viral infections is the
A. integration of viral DNA into host DNA.
B. disintegration of host DNA.
C. addition of a lipid membrane to the virus.
D. separation of viral nucleic acid from the capsid.
D
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What causes antigenic variation?
A. gene mutation B. differential gene expression C. genetic rearrangement D. All of the answer options are correct.
Most known superantigens are glycolipids.
Answer the following statement true (T) or false (F)
Who described the cells that he saw under the
microscope as “animalcules”? a. Robert Hooke b. Robert Brown c. Theodor Schwann d. Rudolf Virchow e. Anton van Leeuwenhoek
A red blood cell will burst when placed in which of
the following kinds of solution? a. hypotonic b. hypertonic c. isotonic d. any of these e. none of these