Members of the Lower Middle Class Today

question 30

Multiple Choice

Members of the lower middle class today:

• A)work at primarily white-collar jobs
• B)make up about 50 percent of American households
• C)are racially and ethnically diverse
• D)all of the above
• E)none of the above

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Definitions:

Proteins

Large, complex molecules made up of amino acids that perform a variety of functions in the body, including structural support, catalysis of metabolic reactions, and transport.

Gastrointestinal Tract

The series of hollow organs joined in a long, twisting tube from the mouth to the anus, including organs like the stomach and intestines, involved in digesting food and absorbing nutrients.

Dipeptide

A molecule consisting of two amino acids joined by a single peptide bond.

Fatty Chyme

A semi-fluid mass of partly digested food enriched with fats, that moves from the stomach to the small intestine.