#1
Which of the following is a characteristic feature of viruses?
Independent metabolism
ExplanationViruses lack independent metabolism and rely on host cellular machinery for replication.
#2
What is the role of the glycoprotein spikes on the surface of enveloped viruses?
Facilitate viral attachment
ExplanationGlycoprotein spikes on enveloped viruses facilitate viral attachment to host cells.
#3
In the context of viral taxonomy, what does the suffix '-virales' indicate?
Order
ExplanationIn viral taxonomy, the suffix '-virales' indicates the order.
#4
Which type of viral nucleic acid is more prone to mutations?
Single-stranded RNA
ExplanationSingle-stranded RNA is more prone to mutations among viral nucleic acids.
#5
What is the significance of the 'latent' phase in certain viral infections?
Absence of symptoms
ExplanationThe 'latent' phase in certain viral infections is characterized by the absence of symptoms.
#6
What is the primary genetic material in most viruses?
RNA
ExplanationMost viruses use RNA as their primary genetic material.
#7
Which enzyme is essential for the replication of retroviruses?
Reverse transcriptase
ExplanationReverse transcriptase is crucial for retrovirus replication as it converts viral RNA into DNA.
#8
Which virus is responsible for causing the common cold?
Rhinovirus
ExplanationRhinovirus is the virus responsible for causing the common cold.
#9
Which viral family does the human immunodeficiency virus (HIV) belong to?
Retroviridae
ExplanationHIV belongs to the Retroviridae family.
#10
What is the process of a bacteriophage injecting its genetic material into a bacterial cell called?
Penetration
ExplanationThe process of a bacteriophage injecting its genetic material into a bacterial cell is called penetration.
#11
What is the term for the protein coat surrounding the viral genetic material?
Capsid
ExplanationThe protein coat surrounding viral genetic material is called the capsid.
#12
Which of the following viruses causes Hepatitis B?
Hepatitis B virus
ExplanationHepatitis B virus is responsible for causing Hepatitis B.
#13
What is the mechanism of action of antiviral drugs targeting neuraminidase?
Inhibition of viral release
ExplanationAntiviral drugs targeting neuraminidase work by inhibiting viral release.
#14
What is the target of protease inhibitors in antiretroviral therapy for HIV?
Viral replication
ExplanationProtease inhibitors in antiretroviral therapy target viral replication.
#15
Which of the following is NOT a method of viral transmission in humans?
Mitosis transmission
ExplanationMitosis transmission is not a method of viral transmission in humans.