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Microbiology Practice Test: Viruses of Bacteria
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Avg score: 65% • Most missed: “The protein coat of the virus remains outside the host cell.”

Viruses of Bacteria topics include: Phages structure and morphology, bacterial viruses replication, lysogeny and lytic.
 

Bacteriophages, also known as phages, are viruses that infect and replicate in bacterial cells. They are the most abundant biological agent on earth and are found everywhere in the environment.

 

Related: Microbiology Practice Test: The World of Bacteria

Microbiology Practice Test: Viruses of Bacteria
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25 Questions

1. Which of the following are said to have binal symmetry?
2. Which of the following coliphage has tadpole shape?
3. What is the colour of the plaque formed?
4. The protein integrase is encoded by which of the following gene?
5. repressor protein makes the cell resistant to lysis.
6. Which of the following are filamentous phage of E.coli?
7. Which of the following is a family of lambda phage viruses?
8. The most complex type of bacterial virus has which of the following morphological features?
9. Which of the following is true for the bacteriophage MV-L2?
10. Pleomorphic viruses possess double-stranded DNA.
11. Which of the following is the correct sequence of events in replication by bacterial phage?
12. In which of the following phage prophage exists as a circular form?
13. The delayed early genes codes for which of the following enzymes?
14. Which of the following enzymes transcribe late genes?
15. What does a viral DNA becomes after being associated with the bacterial chromosome?
16. The nucleic acid core of phages is covered by a protein coat known as _______________
17. Which of the following phage do not cause lysogeny?
18. Which of the following gene codes for an enzyme which directs the insertion of the phage DNA into the bacterial chromosome?
19. The DNA of phage lambda is circular both in the virion and in the host cell.
20. cro gene is an example of an immunity repressor.
21. At what temperature incubation is required for the adsorption of phage T4 and DNA injection into E.coli?
22. In which of the following method, the viral particles are transmitted through lysis of cell?
23. What is the shape of helical phages?
24. Which of the following is the characteristic of repressor protein?
25. Which of the following is the first step in replication by bacterial phages?

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