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1 | | In the lytic cycle of phage replication |
|
| | A) | phage genes integrate into the host cell genome and are not expressed |
| | B) | phage genes exist as prophage |
| | C) | phage DNA remains inside the protein coat |
| | D) | phage nucleic acid is replicated and phage genes are expressed, making new phage protein and lysing the host cell |
|
2 | | A prophage is |
|
| | A) | phage DNA integrated into host cell genome |
| | B) | phage DNA being actively expressed |
| | C) | phage protein left outside the bacterium |
| | D) | toxic to the host bacterial cell |
|
3 | | Which of the following can cause a phage in the lysogenic stage to revert to the lytic stage? |
|
| | A) | lack of nutrients |
| | B) | ultraviolet light |
| | C) | a competing phage |
| | D) | darkness |
| | E) | an electrical charge |
|
4 | | In the lysogenic stage of phage replication, the host cell is lysed. |
|
| | A) | True |
| | B) | False |
|
5 | | Once a phage becomes lysogenic, it will remain lysogenic and never be lytic again. |
|
| | A) | True |
| | B) | False |