Which of the following acts as a serine protease that, with cofactors, cleaves C3b and C4b?

A. DAF (CD55)
B. Properdin
C. Factor H
D. Factor I
E. MCP (CD46)


D

Health & Biomechanics

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Prior to leaving on a backpacking trip to Southeast Asia, a college student has received a tetanus booster shot. This immunization confers protection by way of what immune process?

A) Secondary humoral response B) Cell-mediated immune response C) Primary humoral response D) Innate immunity

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Which combining form means cartilage?

A) osse/o- B) chondr/o- C) myel/o- D) arthr/o-

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Proteins that signal cells to start the immune response:

A) cytokines B) hemoglobin C) phagocytes D) eosinophils

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The image produced by exposure to x-rays is called a

A. radiologist B. radiogram C. radiograph D. radiotherapy E. radiographer

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