MSN 6050 Module 7 Quiz

Insulin and glucagon are involved in carbohydrate metabolism

• True

• False

The central nervous system and red blood cells need a steady supply of _____________and require a lot of ATP

Which enzyme is the rate limiting step of glycolysis?  This enzyme is inhibits gluconeogenesis in a high energy state

The level of fructose 1,6 bisphosphate is _____________ during starvation, but ______________ during the fed state.  This dictates whether glycolysis or gluconeogenesis predominates

• high, low

• high, high

• low, low

• low, high

The synthesis of glucose from non-carbohydrate precursors is called _________________

Match the non-sugar precursors in which glucose is synthesized from to their their mechanism.

• directly from glucose

• Amino acids

• lactic acid fermentation

• Glycerol

• breakdown of triglycerides in adipose tissue

• Pyruvate

• hydrolysis of proteins

• Lactate

What is the main hormone involved in gluconeogenesis?

During an overnight fast, approx. 90% of gluconeogenesis occurs in the liver, with the kidneys providing 10% of newly synthesized glucose molecules. However, during prolonged fasting, the _____________ become major glucose-producing organ(s)

What is the most important nutrient for gluconeogenesis? 

________deficiency can impair glucose, energy homeostasis and fatty acid synthesis.