Microbial Interactions and Pathogenicity Quiz
Test your knowledge on pathogenic microbiology with questions on interactions, virulence factors, and immune evasion.
#1
Which of the following is not a method of microbial interaction?
Competition
Mutualism
Inhibition
Decomposition
#2
Which term describes a situation where one organism benefits while the other is harmed?
Commensalism
Mutualism
Parasitism
Competition
#3
Which of the following is an example of a symbiotic relationship?
Parasitism
Commensalism
Amensalism
Predation
#4
Which of the following is an example of a microbial interaction that benefits both organisms involved?
Parasitism
Commensalism
Amensalism
Mutualism
#5
Which of the following is an example of a pathogen?
E. coli in the human gut
Lactobacillus in yogurt
Rhizobium in root nodules
Staphylococcus aureus on the skin
#6
How does a pathogen cause disease?
By producing oxygen
By producing antibiotics
By damaging host tissues
By providing nutrients to the host
#7
Which of the following is a mechanism used by bacteria to evade the host immune system?
Cell lysis
Antigen presentation
Biofilm formation
Apoptosis
#8
How do viruses contribute to microbial pathogenicity?
By promoting symbiosis
By enhancing host metabolism
By causing cell lysis
By inhibiting biofilm formation
#9
Which of the following is a virulence factor that contributes to microbial pathogenicity?
Antibiotics
Toxins
Nutrients
Antibodies
#10
Which of the following is an example of an opportunistic pathogen?
Salmonella typhi causing typhoid fever
Mycobacterium tuberculosis causing tuberculosis
Candida albicans causing yeast infections
Plasmodium falciparum causing malaria
#11
What is the role of quorum sensing in microbial pathogenicity?
It helps pathogens evade the host immune system
It regulates gene expression in response to population density
It enhances antibiotic resistance
It promotes biofilm formation
#12
Which of the following is an example of horizontal gene transfer in microbial pathogenicity?
Binary fission
Transformation
Mitosis
Meiosis
#13
Which of the following is a mechanism used by viruses to evade the host immune system?
Antigen presentation
Production of interferons
Antigenic variation
Activation of natural killer cells
#14
What is the role of effector proteins in microbial pathogenicity?
They help pathogens adhere to host cells
They modulate host cell functions
They provide nutrients to pathogens
They inhibit host immune responses
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