Microcheck 131

Viruses are non-living agents that consist of nucleic acid surrounded by a protein coat. Viruses only multiply within living cells, because they need certain functions of the host to multiply.

■ List four features of viruses that distinguish them from free-living cells.

■ List three functions that all viruses must perform.

■ An antibiotic is added to a growing culture of E. coli, resulting in death of the cells. Bacteriophage is then added. Would the phage replicate in the E. coli cells? Explain your answer.

Chapter 13 Viruses of Bacteria

Table 13.1 Comparison Between Viruses and Cells

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