Which of the following compounds would be utilized by a person on a carbohydrate-free diet as a source of carbon atoms for de novo glucose synthesis?
A) palmitate
B) b-hydroxybutyrate
C) glycerol
D) cholesterol
E) acetoacetate

Question

Quizplus · Accepted Answer

Glycerol can be converted into glucose through gluconeogenesis, providing carbon atoms for glucose synthesis in the absence of carbohydrates.  In the absence of adequate carbohydrate the body will begin to divert stored fats into the metabolic pool in order to allow for adequate energy production. In addition, the liver will oxidize fatty acids to acetyl-CoA and then divert the acetyl-CoA into ketone synthesis to ensure the brain receives adequate amounts of an oxidizable energy source. When adipose tissue is stimulated to release fatty acids stored in triglycerides, the glycerol backbone diffuses into the blood and is delivered to the liver. Within the liver, glycerol is phosphorylated and converted to DHAP and then diverted into the glucose production via gluconeogenesis.

Which of the Following Compounds Would Be Utilized by a Person