Exam 25: Immune Mechanisms

Localized infections by pyogenic bacteria often form boils or abscesses.

Briefly describe classical complement activation and cell damage.

Antigen-presenting cells present antigens to

Self-reactive T cells are eliminated during the development of tolerance in the immune system.

Inflammation is the usual outcome of an adaptive immune response but not an innate immune response.

Phagocytes have a pathogen-recognition system known as ________ that leads to the recognition,containment,and destruction of a pathogen.

The increased rate of O₂ uptake by activated phagocytes is called the

Which of the following is NOT an immunoglobin?

Haptens CANNOT bind to or induce an immune response but CAN bind to antibodies.

The first cell type active in the innate response is usually a(n)

Briefly describe how a phagocyte engulfs and ingests a pathogen.

Plasma cells usually live for about one

PRRs were FIRST observed in phagocytes in Drosophila (where they are called Toll receptors).

Why are rabies shots given to domestic animals yearly and not just once in the animal's lifetime?

Effective immunogens generally have a molecular weight of ________ or greater.

The most common circulating antibody,comprising about 80% of the serum immunoglobin,is

Briefly describe how B cells are activated.

Bacterial capsules enhance the adherence of phagocytes to bacterial cell walls,thereby promoting phagocytosis.

A(n)________ is a group of sequentially interacting proteins important in innate and adaptive immunity.

Which of the following uses its cell wall glycolipids to absorb hydroxyl radicals and superoxide anions?