Microbiology Chapter 14 HW & Quiz

In the human intestinal tract, E. coli produces vitamins beneficial to the host and can inhibit pathogen growth. In turn, the bacterium is supplied with nutrients and an environment for growth. This symbiotic relationship between E. coli and its host is an example of __________.

Which of the following is NOT an example of microbial antagonism (also known as competitive exclusion)?

Which of the following is NOT necessary to satisfy Koch's postulates?

Which of the following is NOT a notifiable infectious disease?

Germ-free (gnotobiotic) animals often are more susceptible to infections and serious disease than are animals with a typical complement of normal microbiota. Based on this observation, which of the following would be an appropriate conclusion?

Which of the following body sites typically does NOT have normal microbiota?

Women who have a healthy population of Lactobacillus spp. as part of the normal vaginal microbiota are less likely to get yeast infections. Which of the following terms is used to explain this observation?

Microorganisms that typically colonize a host without causing disease are referred to as the __________.

P. aeruginosa and other gram-negative bacteria tend to be difficult to control with antibiotics because of their __________, which carry genes that determine resistance to antibiotics.

__________ pathogens are those that do NOT cause disease in their normal habitat but may do so in a different environment

Koch's postulates are a set of guidelines to follow if you want to __________.

What is the difference between normal and transient microbiota?

In a healthy human, resident microorganisms would be found in all of the following areas EXCEPT the __________.

Which of the following best defines the term pathology?

One effect of washing regularly with antibacterial agents is the removal of normal microbiota. This can result in

Transient microbiota differ from normal microbiota in that transient microbiota

Which of the following is NOT an example of microbial antagonism?

The major significance of Robert Koch's work is that

Koch's postulates established criteria for proving that a specific organism causes a specific disease. Which of the following is NOT one of the criteria given by Koch's postulates?

The rise in herd immunity amongst a population can be directly attributed to

Symptoms of disease differ from signs of disease in that symptoms

Malaria is an infectious disease caused by infection with a protozoan. In certain tropical regions, malaria is constantly present. We would say that malaria is a(n) __________ disease in these regions.

Which of the following is NOT a predisposing factor of disease?

Which of the following statements about the development of infectious diseases is correct?

Biological transmission differs from mechanical transmission in that biological transmission

Which of the following pairs is mismatched?

Which of the following can contribute to postoperative infections?

Emergence of infectious diseases can be attributed to all of the following EXCEPT

The science that deals with when diseases occur and how they are transmitted is called