Place the five stages of bacteriophage replication 21. Place the five stages of
ID: 67983 • Letter: P
Question
Place the five stages of bacteriophage replication 21. Place the five stages of bacteriophage replication in the probe ire stages of baceroaee the proper order. The Fourth stage is a. Biosynthesis b. Penetration c. Release d. Adhesion e. Maturation 22. In contrast to a bacteriophage, enveloped animal viruses, such as HIV, can NOT a. Inject its chromosome directly into the host cell cytoplasm. Attach to surface receptors on a host cell. Be released from a host cell by budding or lysis. Enter a host cell by endocytosis or fusion of membranes Uncoat, removing its protein capsid, before replicating its genome and expressing its proteins. b. c. d. e.Explanation / Answer
21. The stages of bacteriophage replication involve five stages are- (1) adhesion, (2) penetration, (3) biosynthesis, (4) maturation, (5) release. The fourth stage is Maturation. Ans. (e).
22. Enveloped animal viruses follow the following steps:-
1) attach to the surface of the host.
2) may enter the host cell by endocytosis or change entering the cell through the membrane.
3) uncoating of the virus
4) biosynthesis of genetic material i.e. viral RNA occur in cytoplasm and DNA in the nucleus.
5) maturation involves assembly of viruses.
6) release by lysis or budding.
Hence, it does not inject chromosome directly into the host cell cytoplasm. Ans. (a).