A Researcher Is Investigating Which Time of Year Birds Are

question 104

Multiple Choice

A researcher is investigating which time of year birds are exposed to the West Nile Virus (WNV) , so she places a cage full of lab-reared (and therefore unexposed) birds near a marsh full of mosquitoes suspected of carrying WNV.Her lab technician tests the birds' blood for anti-WNV antibodies three times per year.Eventually they find a large amount of IgG but almost no IgM.Which is the best conclusion the researcher can reach from these data?

• A) WNV does not stimulate IgM production.
• B) Birds are not susceptible to WNV.
• C) Birds are incapable of producing IgM.
• D) She needs to sample more frequently because she missed the period of IgM production.
• E) Her media are contaminated.

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Definitions:

Lithium

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A professional who diagnoses and treats mental, emotional, and behavioral disorders, often using various forms of therapy.

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A therapeutic approach and theory of mind developed by Sigmund Freud, emphasizing unconscious processes and childhood experiences in shaping behavior and psyche.

Skinner

B.F. Skinner was an American psychologist and behaviorist who developed the theory of operant conditioning, focusing on the consequences of behaviors.