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Name: Date: Period: Fill in the blanks: Viruses Diseases Shapes Nucleic Acid Reproduction Infect Animal Cell Capsid Smaller 1. Scientists classify viruses according to the living things they ____________________. 2. A virus is just pieces of __________________________. 3. Some viruses have very unusual _____________________. 4. The outer coat of a virus is called a ________________________. 5. Capsids give viruses their ______________________. 6. The three main groups of viruses are bacterial, plant and _______________ viruses. 7. Viruses are much ____________________ than bacteria. 8. A virus does not carry out any of the life processes except ________________, however, it can only reproduce inside another living _________________. 9. A virus has no _________________ parts. 10. Viruses cause many plant and animal ________________________. TRUE OR FALSE In the space provided write ‘true’ if the sentence is true. Write ‘false’ if the sentence is false. __________ 1. The flu is caused by a virus __________ 2. The capsid makes up most of a virus __________ 3. All viruses are round __________ 4. When viruses reproduce, the capsid enters a cell __________ 5. The outer coat of a virus is made up of protein __________ 6. The nucleic acid gives a virus it’s shape __________ 7. Viruses do not ingest or digest food __________ 8. Scientists first learned about how viruses reproduce by studying animal viruses. VIRAL REPRODUCTION Match each statement to the stages showing how viruses reproduce. Write the letter of each statement below the correct stage. Also, name each stage. A. Bacterial virus attaches itself to the host cell B. Virus injects its nucleic acid into the cell C. Nucleic acid of virus directs the cell to make new viral nucleic acid and capsids D. New viruses burst out of the host cell ___________ ________________ Name: _____________ Name: ___________ ________________ _________________ Name: _______________ Name: ________________ 1. Do you think viral infections are hard to treat? Explain why or why not. 2. List four diseases caused by viruses.