Muscle Metabolism — Flashcards

Which metabolic pathways require an obligate activator? 1. _____2. Urea cycle

After three days of starvation, the main source of energy for the brain becomes _____ from adipose stores

Thyroid hormone increases the processes of _____, gluconeogenesis, proteolysis, and lipolysis, all of which may provide sources of ATP

Which metabolic enzymes require an obligate activator? 1. _____2. Carbamoyl phosphate synthetase I (N-acetylglutamate)

In starvation, the enzyme 5'-deiodinase is _____ in tissues such as skeletal muscle, but not inhibited in the other tissues, such as the brain

In a person starving for more than 18 hours, the source of energy is _____.

Effect of diabetes on hepatic glycolysis: no answer _____ - No PFK-2 due to lack of insulin - No glucose trapping in liver leads to elevated blood glucose (hyperglycemia)

Glucagon causes _____ fatty acid synthesis and increased lipolysis, which shunts substrates towards gluconeogenesis

Increased NADH/NAD+ (e.g. due to ethanol) causes increased conversion of _____ -> malate, thus preventing gluconeogenesis

Glucagon acts on the _____ (primarily) and adipose tissue