A Group of Investigators Is Studying the Regulation of Catecholamine

question 93

Multiple Choice

A group of investigators is studying the regulation of catecholamine synthesis in response to severe stress.  In the experiments, subject rats are randomly assigned to either an experimental or a control group.  The experimental rats undergo resection of the pituitary gland, and the control rats undergo craniotomy without pituitary resection.  The experimental animals are subsequently found to have decreased production of epinephrine by the adrenal medulla and cortisol from the adrenal cortex compared with the control animals.  Decreased activity of which of the following enzymes is most likely responsible for the lower epinephrine in the experimental animals?

• A)Catechol-O-methyl transferase
• B)Dopa decarboxylase
• C)Dopamine beta-hydroxylase
• D)Monoamine oxidase
• E)Phenylalanine hydroxylase
• F)Phenylethanolamine-N-methyltransferase
• G)Tyrosine hydroxylase

Distinguish between different types of bargaining items (mandatory, permissive, and prohibited).

Understand the role and impact of union strategies and employer responses in labor relations.

Identify the steps involved in the unionization process and understand the role of the National Labor Relations Board.

Comprehend the implications of union actions and employer counteractions on labor relations.