One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?
A. +ssRNA viruses
B. dsRNA viruses
C. -ssRNA viruses
D. retroviruses
E. both +ssRNA and -ssRNA viruses
Answer: D
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Fungal diseases are usually divided into ________ groups according to the level of infected tissue and the mode of entry into the host.
Fill in the blank(s) with the appropriate word(s).
The core of a virus is
a. a protein. b. a sugar. c. a nucleic acid. d. a fat. e. a phosphate.
____ molecules carry protein-assembly
instructions from the nucleus to the cytoplasm. a. Template DNA b. Messenger RNA c. Transfer RNA d. Ribosomal RNA e. All of these
A branch of genomics that generates three-dimensional structures from their amino acid sequences is known as _____
a. bioinformatics b. comparative genomics c. structural genomics d. pharmacogenomics e. proteomics