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Host-Pathogen Interactions Online MCQs with Answers
Which of the following is the primary route of transmission for respiratory pathogens?
a) Fecal-oral route
b) Vector-borne transmission
c) Airborne transmission
d) Direct contact transmission
What is the term for the process by which pathogens invade and multiply within a host?
a) Transmission
b) Colonization
c) Incubation
d) Replication
Which of the following is an example of a zoonotic disease?
a) Influenza
b) Malaria
c) Tuberculosis
d) Ebola
What is the term for the ability of a pathogen to cause severe disease in a host?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of an opportunistic pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Pneumocystis jirovecii
d) Salmonella enterica
What is the term for the process by which a pathogen enters a host through a breach in the skin or mucous membranes?
a) Infection
b) Inoculation
c) Penetration
d) Invasion
Which of the following is an example of an endogenous infection?
a) Influenza
b) Malaria
c) Tuberculosis
d) Urinary tract infection
What is the term for the ability of a pathogen to enter and establish infection in a host?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of a bacterial pathogen?
a) Human immunodeficiency virus (HIV)
b) Plasmodium falciparum
c) Mycobacterium tuberculosis
d) Zika virus
What is the term for the ability of a pathogen to cause disease in a host?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of a viral pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Influenza virus
d) Salmonella enterica
What is the term for the process by which a pathogen spreads from an infected individual to a susceptible host?
a) Transmission
b) Colonization
c) Incubation
d) Replication
Which of the following is an example of a fungal pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Candida albicans
d) Salmonella enterica
What is the term for the period between pathogen entry into a host and the onset of symptoms?
a) Transmission period
b) Incubation period
c) Latency period
d) Recovery period
Which of the following is an example of a parasitic pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Plasmodium falciparum
d) Salmonella enterica
What is the term for the process by which a pathogen escapes the immune response of a host?
a) Evasion
b) Invasion
c) Immunity
d) Persistence
Which of the following is an example of a protozoan pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Plasmodium falciparum
d) Salmonella enterica
What is the term for the process by which a pathogen spreads from one host to another through an intermediate vector?
a) Vertical transmission
b) Horizontal transmission
c) Vector-borne transmission
d) Direct transmission
Which of the following is an example of an extracellular pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Mycobacterium tuberculosis
d) Salmonella enterica
What is the term for the process by which a pathogen reproduces and increases in number within a host?
a) Transmission
b) Colonization
c) Replication
d) Dissemination
Which of the following is an example of a prion pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Mycobacterium tuberculosis
d) Creutzfeldt-Jakob disease (CJD)
What is the term for the ability of a pathogen to adapt and evolve in response to selective pressures?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of a bacterial toxin?
a) Streptococcus pyogenes
b) Escherichia coli
c) Influenza virus
d) Salmonella enterica
What is the term for the process by which a pathogen overcomes the immune response of a host and establishes infection?
a) Evasion
b) Invasion
c) Immunity
d) Persistence
Which of the following is an example of a viral toxin?
a) Streptococcus pyogenes
b) Escherichia coli
c) Influenza virus
d) Salmonella enterica
What is the term for the process by which a pathogen remains in the host without causing symptoms?
a) Evasion
b) Invasion
c) Immunity
d) Persistence
Which of the following is an example of an intracellular pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Mycobacterium tuberculosis
d) Salmonella enterica
What is the term for the ability of a pathogen to cause disease in a susceptible host?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of a bacterial pathogen that produces exotoxins?
a) Streptococcus pyogenes
b) Escherichia coli
c) Candida albicans
d) Salmonella enterica
What is the term for the process by which a pathogen is able to survive outside the host and remain infectious?
a) Transmission
b) Colonization
c) Incubation
d) Environmental persistence
Which of the following is an example of a toxin-producing pathogen?
a) Streptococcus pyogenes
b) Escherichia coli
c) Plasmodium falciparum
d) Salmonella enterica
What is the term for the ability of a pathogen to cause infection in a host?
a) Pathogenicity
b) Virulence
c) Infectivity
d) Adaptability
Which of the following is an example of a bacterial pathogen that produces endotoxins?
a) Streptococcus pyogenes
b) Escherichia coli
c) Candida albicans
d) Salmonella enterica
What is the term for the ability of a pathogen to cause disease in a population?
a) Epidemic potential
b) Pandemic potential
c) Infectivity
d) Adaptability
Which of the following is an example of a bacterial pathogen that can form biofilms?
a) Streptococcus pyogenes
b) Escherichia coli
c) Pseudomonas aeruginosa
d) Salmonella enterica
What is the term for the process by which a pathogen exits a host to infect new hosts?
a) Transmission
b) Colonization
c) Shedding
d) Dissemination
Which of the following is an example of a bacterial pathogen that can produce spores?
a) Streptococcus pyogenes
b) Escherichia coli
c) Clostridium difficile
d) Salmonella enterica
What is the term for the process by which a pathogen spreads from one host to another through direct physical contact?
a) Vertical transmission
b) Horizontal transmission
c) Vector-borne transmission
d) Direct transmission
Which of the following is an example of an antiviral drug used to treat viral infections?
a) Penicillin
b) Ampicillin
c) Acyclovir
d) Ciprofloxacin
What is the term for the process by which a pathogen establishes long-term residence in a host without causing disease?
a) Latency
b) Incubation
c) Chronic infection
d) Subclinical infection
Which of the following is an example of a fungal pathogen that causes systemic infections?
a) Candida albicans
b) Aspergillus fumigatus
c) Trichophyton rubrum
d) Cryptococcus neoformans
What is the term for the process by which a pathogen enters a host through ingestion of contaminated food or water?
a) Infection
b) Inoculation
c) Ingestion
d) Transmission
Which of the following is an example of an antifungal drug used to treat fungal infections?
a) Penicillin
b) Ampicillin
c) Fluconazole
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through injection into the bloodstream?
a) Infection
b) Inoculation
c) Intravenous transmission
d) Transmission
Which of the following is an example of an antiprotozoal drug used to treat protozoan infections?
a) Penicillin
b) Ampicillin
c) Metronidazole
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the bite of an arthropod vector?
a) Infection
b) Inoculation
c) Vector-borne transmission
d) Transmission
Which of the following is an example of an antihelminthic drug used to treat parasitic worm infections?
a) Penicillin
b) Ampicillin
c) Mebendazole
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through contact with contaminated surfaces or objects?
a) Infection
b) Inoculation
c) Fomite transmission
d) Transmission
Which of the following is an example of an antihelminthic drug used to treat parasitic worm infections?
a) Penicillin
b) Ampicillin
c) Ivermectin
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through inhalation of airborne particles?
a) Infection
b) Inoculation
c) Airborne transmission
d) Transmission
Which of the following is an example of an antiprotozoal drug used to treat protozoan infections?
a) Penicillin
b) Ampicillin
c) Chloroquine
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the mother to the fetus during pregnancy?
a) Congenital transmission
b) Vertical transmission
c) Perinatal transmission
d) Transmission
Which of the following is an example of an antiviral drug used to treat viral infections?
a) Penicillin
b) Ampicillin
c) Oseltamivir
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through sexual contact?
a) Infection
b) Inoculation
c) Sexual transmission
d) Transmission
Which of the following is an example of an antifungal drug used to treat fungal infections?
a) Penicillin
b) Ampicillin
c) Amphotericin B
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the ingestion of contaminated food or water?
a) Infection
b) Inoculation
c) Ingestion
d) Transmission
Which of the following is an example of an antiviral drug used to treat HIV/AIDS?
a) Penicillin
b) Ampicillin
c) Zidovudine
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the bite of an infected animal?
a) Infection
b) Inoculation
c) Zoonotic transmission
d) Transmission
Which of the following is an example of an antimalarial drug used to treat malaria?
a) Penicillin
b) Ampicillin
c) Artemisinin
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through contact with contaminated surfaces or objects?
a) Infection
b) Inoculation
c) Fomite transmission
d) Transmission
Which of the following is an example of an antihelminthic drug used to treat parasitic worm infections?
a) Penicillin
b) Ampicillin
c) Albendazole
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through inhalation of airborne particles?
a) Infection
b) Inoculation
c) Airborne transmission
d) Transmission
Which of the following is an example of an antifungal drug used to treat fungal infections?
a) Penicillin
b) Ampicillin
c) Fluconazole
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the mother to the fetus during pregnancy?
a) Congenital transmission
b) Vertical transmission
c) Perinatal transmission
d) Transmission
Which of the following is an example of an antiviral drug used to treat viral infections?
a) Penicillin
b) Ampicillin
c) Oseltamivir
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through sexual contact?
a) Infection
b) Inoculation
c) Sexual transmission
d) Transmission
Which of the following is an example of an antifungal drug used to treat fungal infections?
a) Penicillin
b) Ampicillin
c) Amphotericin B
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the ingestion of contaminated food or water?
a) Infection
b) Inoculation
c) Ingestion
d) Transmission
Which of the following is an example of an antiviral drug used to treat HIV/AIDS?
a) Penicillin
b) Ampicillin
c) Zidovudine
d) Ciprofloxacin
What is the term for the process by which a pathogen enters a host through the bite of an infected animal?
a) Infection
b) Inoculation
c) Zoonotic transmission
d) Transmission