A Research Scientist Develops an Agent That Specifically Blocks the Interaction

question 53

Multiple Choice

A research scientist develops an agent that specifically blocks the interaction of inositol triphosphate with its intracellular receptor.  A study is then performed in which vascular smooth muscle cells are divided into 2 groups: an experimental group treated with the receptor blocker and an untreated control group.  Both groups are exposed to phenylephrine.  Compared to the control cells, decreased activity of which of the following enzymes is most likely to be observed in the experimental cells?

• A)Adenylate cyclase
• B)Lipoxygenase
• C)Phosphodiesterase
• D)Phospholipase C
• E)Protein kinase C

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Definitions:

Militant Organization

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National Industrial Recovery Act

A legislation passed in 1933 as part of President Franklin D. Roosevelt's New Deal, aimed at stimulating economic recovery during the Great Depression by regulating industry standards and workers' rights.

Economic Recovery

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Workers' Wages

The compensation or earnings paid to employees or laborers for their work or services, usually expressed in terms of hourly, daily, or monthly rates.