#1
Which virus causes COVID-19?
SARS-CoV-2
ExplanationSARS-CoV-2 is the virus responsible for COVID-19.
#2
What is the primary mode of transmission for the influenza virus?
Airborne droplets
ExplanationInfluenza virus primarily spreads through airborne droplets.
#3
Which virus is responsible for the common cold?
Rhinovirus
ExplanationRhinovirus is responsible for the common cold.
#4
Which of the following diseases is NOT caused by a virus?
Tuberculosis
ExplanationTuberculosis is not caused by a virus.
#5
What is the term for a virus that specifically infects bacteria?
Bacteriophage
ExplanationA bacteriophage is a virus that infects bacteria.
#6
What is the genome composition of the Ebola virus?
Single-stranded RNA
ExplanationThe Ebola virus has a single-stranded RNA genome.
#7
Which of the following viruses is known to cause severe acute respiratory syndrome (SARS)?
SARS-CoV
ExplanationSARS-CoV is known to cause severe acute respiratory syndrome (SARS).
#8
How do viruses typically enter their host cells?
Binding to surface receptors and entering by endocytosis or fusion
ExplanationViruses typically enter host cells by binding to surface receptors and entering via endocytosis or fusion.
#9
What is the main difference between an epidemic and a pandemic?
A pandemic is global, while an epidemic is localized
ExplanationA pandemic affects a larger geographical area globally, while an epidemic is confined to a more localized region.
#10
What role do vectors play in viral transmission?
They transmit viruses from one host to another
ExplanationVectors play a role in transmitting viruses from one host to another.
#11
Which of the following viral diseases has been eradicated through vaccination?
Smallpox
ExplanationSmallpox has been eradicated through vaccination efforts.
#12
What is the primary vaccine strategy used to prevent poliovirus infection?
Both IPV and OPV
ExplanationBoth Inactivated Poliovirus Vaccine (IPV) and Oral Poliovirus Vaccine (OPV) are used for poliovirus prevention.
#13
Which of the following best describes the term 'viral shedding'?
The release of virus particles from host cells into the environment
ExplanationViral shedding refers to the release of virus particles from host cells into the environment.
#14
Which of the following is a feature of retroviruses?
They replicate through a DNA intermediate
ExplanationRetroviruses replicate through a DNA intermediate as part of their life cycle.
#15
Which of the following viral infections can be chronic?
Hepatitis B
ExplanationHepatitis B infection can become chronic.