Which of the Following BEST Explains the Timing of the Classical

question 7

Multiple Choice

Which of the following BEST explains the timing of the classical pathway of complement fixation, relative to the other pathways of complement fixation, against a pathogen in an individual who has never been exposed to said pathogen?

• A)No target for C1qrs exists on the surface of the pathogen in the earliest stages of the response to it.
• B)The chemical environment of the pathogen's surface favors the spontaneous activation of soluble C3 immediately upon exposure to the pathogen.
• C)C1qrs immediately recognizes carbohydrate antigens on the surface of the pathogen, allowing for rapid formation of the C4b2a C3 convertase.
• D)The pathogen expresses one or more factors on its surface that act as negative regulators of C3 convertase formation.
• E)None of the answers are correct.

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Definitions:

DSM-IV-TR

The fourth edition, text revision, of the Diagnostic and Statistical Manual of Mental Disorders, a guide for diagnosing mental disorders.

Cluster B

Cluster B refers to one of the three clusters of personality disorders in the DSM (Diagnostic and Statistical Manual of Mental Disorders), characterized by dramatic, overly emotional, or unpredictable thinking or behavior.

DSM-IV-TR

The fourth edition, text revision of the Diagnostic and Statistical Manual of Mental Disorders, a guide for diagnosing mental disorders.

Diagnostic And Statistical Manual

The Diagnostic and Statistical Manual of Mental Disorders (DSM) is a standardized classification system for diagnosing mental disorders, used by mental health professionals in the United States and increasingly worldwide.