Final answer:
If an amino acid is not used to create new proteins, it can be converted to glucose or ketones.
Step-by-step explanation:
If an amino acid is not used to create new proteins, it can be converted to glucose or ketones.
When the body needs energy and there is an excess of amino acids, they can undergo a process called gluconeogenesis, where they are converted to glucose. This glucose can then be used as fuel by the body.
In addition, the amino acids can also be converted to ketones, which can serve as an alternative energy source for the brain and other tissues.
Learn more about conversion of amino acids to glucose and ketones