A Research Scientist Studying the Metabolic Pathways That Contribute to Obesity

question 145

Multiple Choice

A research scientist studying the metabolic pathways that contribute to obesity feeds experimental animals a high-carbohydrate, high-protein diet for a prolonged period.  A sample of liver tissue is then obtained from the animals, and the activity of various enzymes involved in fatty acid metabolism is measured and recorded.  It is determined that beta-oxidation of fatty acids is inhibited within these cells as a result of the diet.  An increase in which of the following substances is most likely responsible for the observed effect?

• A)Acetoacetate
• B)Carnitine
• C)Citrate
• D)Malonyl-CoA
• E)NADPH

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Definitions:

Glucose

A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

Brain Lesioning

A method in neuroscience and psychology involving the intentional damage or removal of brain tissue to study behavioral changes or the function of a particular area of the brain.

Transcranial Magnetic Stimulation

A noninvasive procedure that uses magnetic fields to stimulate nerve cells in the brain, often used as a treatment for depression.

Face Recognition

A technology used to identify or verify a person's identity by analyzing their facial features.