A Complement Fixation Test Is Done to See If a Specimen

question 38

Multiple Choice

A complement fixation test is done to see if a specimen contains antibodies to rubella virus. A control negative for antibodies and a control positive for antibodies are run, and the sensitized sheep cells are tested alone with no specimen or complement added. Which of reactions below is correct if the specimen does contain antibodies?

• A)Positive control, no lysis; negative control, lysis; specimen, no lysis; red cells no lysis
• B)Positive control, lysis; negative control, no lysis; specimen, lysis; red cells lysis
• C)Positive control, lysis; negative control, no lysis; specimen, lysis; red cells no lysis
• D)Positive control, no lysis; negative control, lysis; specimen, no lysis; red cells lysis

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Definitions:

Phylogenetic Tree

A diagram that represents evolutionary relationships among various biological species or entities based upon similarities and differences in their physical or genetic characteristics.

Mammalian Middle Ear

A part of the ear in mammals that contains three bones, known as the ossicles, which transmit sound vibrations from the eardrum to the inner ear.

Selective Pressures

Environmental or biological factors that influence the survivability and reproductive success of organisms, driving evolutionary change.

Strategy Implementation

Strategy implementation is the process of putting strategies into action.