During the lysogenic cycle of a phage, the viral genome: Is destroyed by host nucleases Is immediately transcribed and translated Integrates into the host genome as a prophage Causes host cell lysis
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Which of the following is NOT a step in the lytic cycle of a T4 phage? The cell wall of the host cell is damaged by the phage The phage DNA enters the host cell cytoplasm A phage protein binds to a host receptor Pieces of phage are assembled into a virion outside of the host cell Translation of phage proteins takes place in the cytoplasm QUESTION 14 How does a lysogenic phage differ from a lytic phage? Only a lysogenic phage causes the lysis of the host cell Only a lysogenic phage injects DNA into the host cell cytoplasm Only a lysogenic phage needs to perform the adsorption step Only a lysogenic phage expresses a lysozyme enzyme Only a lysogenic phage becomes part of the host cell's genome QUESTION 15 What effect will a bacteriophage have on a human cell? A lytic phage will harm a human cell, while a lysogenic phage will result in the latent infection of a human cell. No effect. Humans are not included in the host range of bacteriophages. Bacteriophages undergo lysogenic replication in human cells, but do not produce new phage. The bacteriophage will result in the rapid lysis of human cells. The bacteriophage will stimulate beneficial cell division in the human cell.
Jorge V.
Which statement is true about the lysogenic cycle? Viral genome is released in a host cell. The host cell is destroyed by an enzyme so new viruses can be released. Host cells remain alive after the viral infection. The viral DNA incorporates into the host DNA The virus genome and viral proteins are assembled into new viruses.
Maitreya E.
Which of the following statements is NOT true of lysogeny? Select one: a. Prophage is inserted into the host genome. b. Lytic cycle may follow lysogeny. c. It causes lysis of host cells. d. It can give infected pathogens the genetic information for toxin production. e. It is a "silent" infection; the virus does not replicate.
Madhur L.
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