2. Viruses use the enzymes and machinery of the host cell to make viral proteins and copies of its genome. a. Why does the virus need to copy its genome? b. Why does the virus need to make proteins? What proteins is it making? 3. Animal viruses (viruses that infect animals, like humans) are classified based on the type of nucleic acid that makes up their genome. What kind of nucleic acid makes up the genomes of the following types of viruses? a. DNA viruses: b. ssRNA virus: c. dsRNA virus: d. Retrovirus: 4. Fill in the table below about the enzymes that are used to replicate the genomes of viruses that infect animal cells. You may need to look some of these enzymes up in the index of your textbook. Enzyme Name Origin of enzyme (host or viral) Template Final Product of Location of enzyme activity Molecule Reaction in the host cell (nucleus or cytoplasm?) DNA polymerase RNA polymerase RNA dependent RNA polymerase Reverse Transcriptase Ribosome
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