A) injection own nucleic acid inside host cell
B) by contact with cell receptor and endocytosis
C) by phagocytosis
D) fusion with the plasma membrane of host
Correct Answer: B
Solution :
Viruses are non-cellular obligate pathogen each has a nucleic acid core surrounded by a protein coat. The nucleic acid present in viruses is either DNA or RMA and contains complete- genetic information. The protein coat of virus is called capsid and it is formed by similar units called capsomeres Some viruses have a lipid bilayer membrane around them these are called enveloped viruses while the other viruses are called naked During penetration withing a host, fusion with the host membrane is preferred by the enveloped viruses while endocytosis is preferred by necked viruses
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