Textbook Question
Explain how your body can convert excess carbohydrates in the diet to fats. Can excess carbohydrates be converted to protein? What else must be supplied?
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3. Energy & Cell Processes
Introduction to Metabolism
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Which substance is primarily produced by the body using fat during fatty acid oxidation?
A
Glycogen
B
Lactic acid
C
Glucose
D
Ketone bodies
Verified step by step guidance1
Understand the process of fatty acid oxidation, which is the breakdown of fatty acids to produce energy in the form of ATP.
Recognize that during fatty acid oxidation, acetyl-CoA is produced, which enters the citric acid cycle to generate ATP.
In situations where carbohydrate intake is low, such as fasting or low-carbohydrate diets, the liver converts excess acetyl-CoA into ketone bodies.
Ketone bodies serve as an alternative energy source for tissues, especially the brain, when glucose is scarce.
Identify that the primary substances produced during fatty acid oxidation, when carbohydrates are limited, are ketone bodies, not glycogen, lactic acid, or glucose.
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