Bacterial Pathogenesis

Which enzyme produced by bacteria helps them to invade host tissues by breaking down connective tissue?

• Coagulase

• Hyaluronidase

• Catalase

• DNAse

Endotoxins are typically associated with which type of bacteria?

• Gram-positive cocci

• Mycoplasmas

• Acid-fast bacilli

• Gram-negative bacteria

Which of the following is considered a primary virulence factor in many pathogenic bacteria?

• Capsule

• Ribosome

• Flagellum

• Endospore

Exotoxins differ from endotoxins in that exotoxins:

• Are part of the outer membrane

• Are heat-stable

• Are secreted proteins

• Are only produced by Gram-negative bacteria

Biofilms contribute to bacterial pathogenicity by:

• Increasing nutrient uptake

• Enhancing motility

• Protecting bacteria from host defenses and antibiotics

• Promoting sporulation

The first step in the bacterial infection process is usually:

• Toxin production

• Immune evasion

• Adherence to host tissue

• Tissue damage