micro ch16

Which of the following is an INCORRECT statement about antimicrobial peptides (AMPs)?

AMPs have a narrow spectrum of antimicrobial activities.

Which of these molecules or structures is/are NOT associated with innate immunity?

antibodies

One remarkable finding on a patient's laboratory workup is a marked eosinophilia. This might be suggestive of __________.

either a parasitic infection or an allergic (hypersensitivity) reaction

Neutrophils, basophils, and eosinophils are collectively referred to as __________.

granulocytes

Which of the following statements concerning lysozyme is FALSE?

it is an organelle in WBCs

Which of the following does NOT accurately describe innate immunity?

it produces strong, long-lasting memory responses

Which of the following statements about sebum is NOT true?

it raises the pH of skin

Which of these cells do NOT have phagocytic activity?

lymphocytes

The ID50 for many pathogens is significantly smaller when testing with gnotobiotic animals compared to animals with normal microbiota. This is likely because of __________.

microbial antagonism

Which type of leukocyte is the most abundant in blood?

neutrophils

When blood cells are removed from blood, the remaining liquid is referred to as __________.

serum

The respiratory system is protected against harmful microbes by all of the following EXCEPT __________.

the lacrimal apparatus

__________ are involved in detecting foreign invaders. They do so by binding to pathogen- associated molecular patterns (PAMPs) on the surface of the pathogen.

toll-like receptors

Which of the following is the correct order of events after tissue damage during the process of inflammation?

vasodilation; margination; diapedesis; phagocytosis

Which term best describes the symbiotic relationship between humans and most of the normal microbiota that live on our human skin?

commensialism

Which of the following is NOT a chemical factor that helps the skin to be relatively resistant to infection?

complement proteins

The epidermis __________.

contains the protein keratin