BIO225 - Chapter 17 (MasteringMicro)

Which of the following statements concerning antigen-presenting cells is true?

Which of the following statements concerning cellular immunity is FALSE?

Consider a helminthic infection in which an individual is colonized by a parasitic worm. The worm is too big to be engulfed by a phagocytic cell. How does the immune system respond?

Which of the following statements concerning immunological memory is true?

Which type of adaptive immunity does the following statement describe? This type of immunity is acquired via injection of antibodies from an individual or host that has immunological memory to the specific pathogen or antigen.

Which type of adaptive immunity does the following statement describe? This type of immunity is acquired via the passing of antibodies from a mother to a child to give immunity during the development of the child's immune system.

Which type of adaptive immunity does the following statement describe? This type of immunity is acquired when a person is vaccinated for a specific type of infection via the introduction of antigens. These antigens normally have undergone some type of modification and may not confer the same type of long-lasting memory that would occur with unmodified antigens.

Which type of adaptive immunity does the following statement describe? This type of immunity is acquired when antigens enter the body and an infection occurs. The immune system works to fight the infection via the innate and adaptive immune responses and creates an immunological memory of that particular antigen.

Which immunoglobulin class, found in blood, lymph, and the intestine, can cross the placenta and help to protect a fetus?

An individual may be exposed to a pathogen and become infected without actually getting sick. This is known as a subclinical infection. Even in subclinical infections, the individual's adaptive immune system can generate memory for the pathogen. What type of adaptive immunity is this?

Phagocytosis is a process for engulfing large particles (>1μm). Which feature of antibodies will help to make particles larger, therefore enhancing phagocytosis?

The flu virus mutates fairly frequently. Its adhesive proteins change such that we have different "strains" of influenza each year. When a particular flu virus mutates such that its adhesive proteins change, which function of antibodies is disrupted?

__________________ stimulated with ___________ differentiate into __________, which secrete antibodies into the bloodstream.

If a patient has been exposed to an antigen for the first time, which class of immunoglobulin appears first?