Answer :
Final answer:
Viruses can enter animal cells through fusion of the viral envelope and the cell membrane or engulfment/phagocytosis. Enveloped viruses may use fusion to enter, while non-enveloped viruses may utilize endocytosis or injection.
Explanation:
Viruses can gain entry into an animal cell through fusion of the viral envelope and the cell membrane or by engulfment/phagocytosis of the virus. Enveloped viruses may use the method of fusion, while non-enveloped viruses may enter through endocytosis or injection of genetic material into the host cell.
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