Exam 25: Microbial Infection and Pathogenesis

Endotoxins are released in large amounts only when cells lyse.

Hyaluronidase worsens infection by causing damage to red blood cells.

Why does Neisseria gonorrhea adhere only to mucosal epithelial cells in the genitourinary tract, eye, rectum, and throat?

Which of the following is NOT a subunit of lipopolysaccharide (LPS)?

Gram-positive bacteria produce endotoxins.

Which disease CANNOT be prevented via the use of a vaccine generated from an attenuated pathogen?

When does an infection become a disease?

Decalcification of the tooth enamel is caused by

The decrease or loss of virulence of a pathogen is referred to as

Which genus produces hyaluronidase?

Virulence factors in Salmonella include antiphagocytic proteins.

Which of the following is TRUE about flagella?

Hormones that are produced under stress boost normal immune responses and play a role in stress-mediated disease resistance.

Epithelial cells lining the respiratory tract form a

HIV infection causes immunosuppression because it causes the destruction of CD4 lymphocytes.

Which of the following is a reason that specific pathogens tend to infect specific tissues?

Staphylococcus aureus produces ________, leading to fibrin clots that protect them from attack by host cells.

Clostridium botulinum are endospore-forming bacteria normally found in the soil.

What is the difference between adherence and colonization?

Staphylococcus aureus and Streptococcus pyogenes strains can produce ________ that cause the severe and sometimes life-threatening symptoms of toxic shock syndrome.