#1
Which virus causes the common cold?
Rhinovirus
ExplanationCommon causative agent for the common cold.
#2
What is the primary way that viruses are transmitted from person to person?
Through the air via respiratory droplets
ExplanationMain mode of viral transmission among people.
#3
Which of the following is a characteristic feature of viruses?
Obligate intracellular parasitism
ExplanationViruses rely on host cells for reproduction.
#4
How do vaccines primarily work to protect against viral infections?
By stimulating the immune system to recognize and fight the virus
ExplanationVaccines train immune system against viruses.
#5
Which virus is responsible for causing chickenpox?
Varicella-zoster virus
ExplanationAgent causing the chickenpox infection.
#6
Which of the following is not a common symptom of viral infections?
Increased blood pressure
ExplanationNot a typical symptom of viral infections.
#7
Which virus is known to cause liver inflammation, commonly referred to as hepatitis?
Hepatitis A virus
ExplanationAgent behind hepatitis infection.
#8
Which of the following viruses is known to cause a pandemic in 2020?
SARS-CoV-2
ExplanationResponsible for the COVID-19 pandemic in 2020.
#9
What is the mechanism of action for antiviral drugs against HIV?
Inhibiting viral DNA replication
ExplanationPrimary action of antivirals against HIV.
#10
What does the term 'zoonotic' refer to in the context of viral infections?
Diseases that can be transmitted from animals to humans
ExplanationViral diseases crossing from animals to humans.
#11
Which part of the virus is responsible for attaching to the host cell?
Surface proteins
ExplanationFacilitates viral attachment to host cells.
#12
What term describes the ability of a virus to cause disease?
Pathogenicity
ExplanationCapacity of a virus to induce disease.
#13
Which of the following viruses has a single-stranded RNA genome?
Human immunodeficiency virus (HIV)
ExplanationRNA-based genome characteristic of HIV.
#14
What is the primary function of the viral envelope?
To assist in viral attachment and entry into host cells
ExplanationFacilitates virus entry into host cells.
#15
Which virus is associated with the development of cervical cancer?
Human Papillomavirus (HPV)
ExplanationLinked to cervical cancer development.
#16
What is 'antigenic shift' in the context of influenza viruses?
A significant change resulting from the combination of two or more different strains
ExplanationMajor genetic change in influenza virus.
#17
Which of the following best describes a retrovirus?
A virus that uses reverse transcriptase to transcribe its RNA into DNA
ExplanationViruses that reverse transcribe RNA into DNA.