Multiple Choice
Which of the following best defines a viral species?
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1. Introduction to Microbiology
Acellular Infectious Agents: Viruses, Viroids & Prions
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Which of the following is a type of cytopathic effect observed in cells infected by certain viruses?
A
Increase in cell motility
B
Production of endospores
C
Enhanced DNA replication
D
Formation of syncytia
Verified step by step guidance1
Understand that cytopathic effects (CPE) are visible changes in host cells caused by viral infection, which can help identify the presence and type of virus.
Review common types of cytopathic effects, such as cell rounding, detachment, lysis, inclusion bodies, and formation of syncytia (multinucleated giant cells).
Recognize that 'increase in cell motility' is not a typical cytopathic effect caused by viruses; it relates more to cell behavior rather than structural changes.
Know that 'production of endospores' is a bacterial survival mechanism and not related to viral infection or cytopathic effects.
Identify that 'formation of syncytia' occurs when viral fusion proteins cause infected cells to merge, creating large multinucleated cells, which is a classic cytopathic effect.
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