MIC 205 final questions with correct answers

In type I, immediate hypersensitivity, IgE antibodies attach to _______________, causing degranulation of histamine upon second exposure to the antigen. CORRECT ANSWER basophils This type of hypersensitivity reaction is caused by the plasma cells making IgE instead of IgG antibodies. CORRECT ANSWER Type I: Immediate Hypersensitvity A small molecule that elicits an immune response only when attached to a larger molecule CORRECT ANSWER A Hapten A hypersensitivity reaction in which IgE antibodies are first produced as a result to exposure, attach to mast cells, basophils and eosinophils is followed by which of the following on the second exposure to the allergan? CORRECT ANSWER Allergan reaction with IgE on cells, releasing histamine In most cases, a type O blood donor can: CORRECT ANSWER Donate to A, B, and AB persons Contact dermatitis (e.g. poison ivy) is a type of: CORRECT ANSWER Type IV: Delayed Hypersensitivity A 30 year old patient presents with fever, nausea, stiff neck, vomiting. Bacterial blood cultures come back negative. The patient is rapidly deteriorating. You go back over your notes and see that the patient was waterskiing a week earlier. What organism would this information tip you off to? CORRECT ANSWER Naegleria fowleria