Carl Has Frequent Infections And, After Testing, Has Been Diagnosed

question 5

Multiple Choice

Carl has frequent infections and, after testing, has been diagnosed with a genetic form of agammaglobulinemia (meaning no gamma globulins in the blood) . Why would this condition result in difficulty fighting off infections?

• A) His B cells can't make antibodies, so he has no humoral immune response.
• B) His T cells over-react, resulting in activation of autoantibodies.
• C) His macrophages are overproducing cytokines, making the immune response ineffective.
• D) He is unable to produce T cells, so he has no cellular immune response.

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Definitions:

Great Depression

A severe worldwide economic downturn that took place during the 1930s, marked by high unemployment, deflation, and a significant fall in economic activity.

Aggregate Demand

The sum of economic demand for every product and service, evaluated at a unified price point throughout a defined temporal stretch.

Full Employment

This is a situation in an economy where all available labor resources are being used in the most efficient way possible, typically implying a very low unemployment rate.

Aggregate Demand Curve

A graphical representation that shows the total quantity of goods and services demanded across all levels of prices in an economy.