18 Questions
What is the term for a systemic infection caused by the multiplication of pathogens in the blood?
Septicemia
Which type of infection appears rapidly with severe symptoms and then vanishes rapidly?
Acute infection
What is the term for the presence of toxins in the blood?
Toxemia
In Koch's postulates, what must happen to the pathogen from the pure culture?
It must cause disease in a healthy host
What type of infection usually has less severe symptoms but persists for long periods of time?
Chronic infection
Which term refers to the presence of viruses in the blood?
Viremia
What type of forces or interactions are involved in nonspecific adhesion?
Atomic and molecular vibrations
How is specific adhesion characterized?
Lock-and-key interaction between complementary molecules
Where do human pathogens usually colonize?
Digestive tract
What process may be aided by invasins produced by pathogens?
Breakdown of host cell membrane
How do pathogens evade host defense mechanisms?
Stimulate phagocytic engulfment
Which type of attraction is involved in nonspecific adhesion?
Brownian movement
What is the main difference between mutualism and commensalism?
Both organisms benefit in mutualism, while only one organism benefits in commensalism.
Which type of symbiotic relationship involves one organism benefiting while the other is harmed slightly or may be killed?
Parasitism
What term is used to describe a microorganism capable of causing disease when the balance between normal flora and human host is interrupted?
Pathogen
Which type of microbes would typically be considered opportunistic pathogens?
Normal flora
What is the main characteristic that distinguishes a parasite from other types of organisms?
It causes disease in the host organism.
In which type of symbiotic relationship can one organism hamper or prevent the growth/survival of another without being affected itself?
Amensalism
Explore the concepts of host-microbe relationships and stages of infection from Sherris textbook chapters 1 and 5. Learn about symbiosis, normal flora, opportunistic pathogens, portals of entry and exit, contamination vs infection, and the nature of infections.
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