Final answer:
Gluconeogenesis is the process of synthesizing new glucose molecules when glucose levels are low. Ketone synthesis occurs when there is an excess of acetyl CoA. Ketones can serve as an alternative fuel source when there is not enough glucose available.
Step-by-step explanation:
Switching from Gluconeogenesis to Ketone Synthesis-
In the body, gluconeogenesis is the process of synthesizing new glucose molecules when glucose levels are low. Ketone synthesis, on the other hand, occurs when there is an excess of acetyl CoA, which is created from the oxidation of fatty acids. When there is not enough glucose available, ketones can serve as an alternative fuel source.
During prolonged starvation or uncontrolled diabetes, the body may produce ketones faster than it can use them. This leads to the breakdown of ketones into carbon dioxide and acetone. One way to detect ketogenesis is the presence of a sweet, alcohol-like smell on the breath.