3. All phages must have the ability to
1. have their nucleic acid enter the host cell.
2. kill the host cell.
3. multiply in the absence of living bacteria.
4. lyse the host cell.
5. have their nucleic acid replicate in the host cell.
4. The tail fibers on phages are associated with
C. transcription of phage DNA.
D. assembly of virus.
E. lysis of host.
5. The phages Qfi and MS2
1. contain double-stranded RNA.
2. infect all strains of E. coli.
3. contain single-stranded RNA.
4. have very large burst sizes.
5. contain single-stranded DNA.
1. a phage that contains double-stranded DNA.
2. a phage that contains single-stranded DNA.
3. a phage that can lysogenize cells.
4. a phage that can carry out specialized transduction.
5. a virulent phage.
7. The induction of a temperate phage by ultraviolet light results from
A. damage to the phage.
B. formation of thymine dimers.
C. destruction of excision enzymes.
D. destruction of a repressor.
E. killing of the host cell.
8. Filamentous phages
A. attach to bacterial receptors in the cell wall.
B. take over metabolism of the host cell.
C. are extruded from the host cell.
D. undergo assembly in the cytoplasm of the host cell.
E. degrade the host cells' DNA.
340 Chapter 13 Viruses of Bacteria 9.
1. only one kind of nucleic acid.
2. a protective protein coat.
3. many enzymes.
4. a single shape.
5. a wide host range.
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