Which Observation Suggested to Sutherland the Involvement of a Second

question 21

Multiple Choice

Which observation suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells?

• A) Enzymatic activity was proportional to the amount of calcium added to a cell-free extract.
• B) Receptor studies indicated that epinephrine was a ligand.
• C) Glycogen breakdown was observed only when epinephrine was administered to intact cells.
• D) Glycogen breakdown was observed when epinephrine and glycogen phosphorylase were combined.
• E) Epinephrine was known to have different effects on different types of cells.

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Definitions:

Chicano Activists

Individuals of Mexican-American descent who advocate for political and social changes, often focusing on civil rights and education.

Southwest

A geographic region of the United States generally including Arizona, New Mexico, Texas, and parts of surrounding states, known for its distinct cultural heritage and arid climate.

Crusade for Justice

The Crusade for Justice was a Chicano civil rights and cultural organization founded by Rodolfo "Corky" Gonzales in Denver, Colorado in 1966, playing a crucial role in advocating for the rights and cultural pride of Mexican Americans.

Chicano Youth

Young individuals of Mexican American descent, often associated with cultural and political movements advocating for civil rights.