During exposure to a foreign invader, there are more __________ present in the vertebrate body than before exposure macrophages and antigens all of these antibodies lymphocytes TRUE ANSWER : ? YOUR ANSWER : ?
What are the solutions prepared from weakened or dead microorganisms, viruses, or toxins that provide some immunity from diseases? Histamines Drugs Antibiotics Vaccines TRUE ANSWER : ? YOUR ANSWER : ?
What is the result of an abnormal response of the immune system to part of a person's own body? Cancer Passive immunity An autoimmune disease An allergic response TRUE ANSWER : ? YOUR ANSWER : ?
Plasma cells produce thousands of __________ that are released into the bloodstream virus fragments antibodies antigens helper T cells TRUE ANSWER : ? YOUR ANSWER : ?
What is a protein produced by host cells infected by viruses? Vaccine Histamine Antiserum Interferon TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following immune cells would have an especially low count in a patient with advanced AIDS? Killer T lymphocytes B lymphocytes Helper T lymphocyte None of these TRUE ANSWER : ? YOUR ANSWER : ?
Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of antibody via the alternative pathway antigen via the alternative pathway antibody via metabolic pathway None of these TRUE ANSWER : ? YOUR ANSWER : ?
To detect a humoral immune response to influenza virus, it is possible to measure cytotoxicity of virus-infected cells in tissue culture plasma cytokine levels dividing T cells in the draining lymph nodes serum antibody titer TRUE ANSWER : ? YOUR ANSWER : ?
If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body? All of these The disease organism itself and antigens for the disease organism A very high level of antibodies against the disease antigens Memory B lymphocytes for the antigen of this disease organism TRUE ANSWER : ? YOUR ANSWER : ?
Immunological memory is due to long lived B cells that secrete a specific antigen long lived B cells that secrete a specific antibody short lived helper T cells that signal macrophage to divide short lived macrophage that can recognize specific pathogens TRUE ANSWER : ? YOUR ANSWER : ?