CH 8 PREWORK

Biofilms commonly occur on catheters or other indwelling devices and thus are a source of community-acquired infection?

T or F

Both gram-positive and gram-negative bacterial infections can cause fever.

T or F

Age and immune status of an individual might affect the severity of an infection.

T or F

Bacteria could produce toxins or enzymes that destroy host tissues and cause disease.

T or F

The release of toxins from a bacterial cell is an example of a virulence factor.

T or F

Fimbriae are bacterial cell structures used for protein synthesis.

T or F

Biofilms can protect bacteria against antibiotics or host immune defense.

T or F

A healthy individual exposed to 1,000 Salmonella bacteria would be unlikely to experience illness.

T or F

Virulent bacteria grow at the expense of their host.

T or F

Infection of some parts of the body might produce more serious disease than infections elsewhere in the body, even if the infection is the same type and amount of bacteria.

T or F

The ability to elicit an exaggerated immune response is an example of a virulence factor.

T or F

Bacteria could produce acids or gases that destroy host tissues and cause disease.

T or F

Bacteria that express the enzyme coagulase are likely to be destroyed by host immune defenses.

T or F

Capsules are an example of a bacterial virulence factor.

T or F

Biofilms can protect bacteria against antibiotics or host immune defense.

T or F

In most cases, the symptoms of an infection, like redness and swelling, are the result of bacterial toxins.

T or F

Bacteria with capsules are more likely to be recognized by host immune responses.

T or F

Adhesion molecules act like ‘molecular Velcro’ to help bacterial cells attach to the host.

T or F

Bacterial cells might alter their surface proteins to avoid detection by host immune defenses.

T or F

Inoculum size refers to the size of a bacteria cell.

T or F

Infections with gram negative bacteria do not typically result in a fever.

T or F

A healthy individual exposed to 1,000 Shigella bacteria would be unlikely to experience illness.

T or F

Adhesion molecules are located on pili.

T or F

Anaerobic bacteria require oxygen for growth.

T or F

Biofilms commonly occur on pacemakers or other implants and thus are a source of nosocomial infection.

T or F

Biofilms are sticky webs produced by the host as a defense against bacterial infection.

T or F