#1
Which of the following is NOT a characteristic of viruses?
They can replicate outside of a host cell
ExplanationViruses require a host cell for replication.
#2
Which of the following is NOT a method of viral entry into host cells?
Phagocytosis
ExplanationViruses typically enter through endocytosis or fusion.
#3
Which of the following is a viral classification category based on the host range?
Specialist viruses
ExplanationThese viruses infect specific host species.
#4
Which of the following is NOT a type of viral nucleic acid?
mRNA
ExplanationmRNA is not a type of viral nucleic acid; it's produced by viruses.
#5
Which of the following is NOT a type of viral capsid symmetry?
Linear
ExplanationLinear capsid symmetry is not observed in viruses; they typically exhibit helical or icosahedral symmetry.
#6
What is the primary component of a viral capsid?
Protein
ExplanationCapsids are made of protein subunits.
#7
Which classification system is primarily based on viral genome structure?
Baltimore Classification
ExplanationIt categorizes viruses based on their genome type.
#8
Which of the following is a characteristic feature of enveloped viruses?
They contain glycoproteins
ExplanationEnveloped viruses have a lipid bilayer studded with glycoproteins.
#9
What is the function of a viral envelope?
To facilitate viral attachment to host cells
ExplanationIt aids in host cell recognition and attachment.
#10
Which viral classification system is based on the type of nucleic acid present in the virus?
Baltimore Classification
ExplanationIt categorizes viruses based on their genome composition.
#11
Which of the following is a controversial topic related to viruses?
Origin of life
ExplanationViruses' role in the origin of life is debated.
#12
What is the significance of viral reassortment?
It leads to the formation of new viral strains
ExplanationReassortment results in genetic diversity.
#13
Which viral classification system considers the mode of transmission?
ICTV Classification
ExplanationThis classification system includes transmission method as a criterion.
#14
What is the significance of viral quasispecies?
It enhances viral fitness and adaptability
ExplanationQuasispecies promote viral adaptation and survival.
#15
Which viral structure plays a crucial role in host cell recognition?
Viral envelope
ExplanationThe envelope contains proteins for host cell recognition.