Q. A 45-year-old woman with a history of type 2 diabetes comes to her endocrinologist's office for a routine follow-up visit. She has been managing her condition with diet, exercise, and metformin. Recently, her primary care physician started her on insulin therapy due to persistent hyperglycemia. She is concerned about potential weight gain associated with insulin therapy. The endocrinologist takes this opportunity to educate his assistant about the metabolic effects of insulin, particularly its influence on fatty acid metabolism. Which of the following best describes the effect of insulin on acetyl CoA carboxylase?