Anatomy & Physiology › Section V · Metabolism and nutrition › Topic V.3
Lipid and protein metabolism
Fat is the body's densest energy store, and protein is its working material. This topic shows how fatty acids are burned and built, why the liver makes ketone bodies, and what happens to the nitrogen when amino acids are used for fuel.
In this topic
- From the gut to the cells
- Lipolysis
- Beta-oxidation
- Worked example: ATP from palmitate
- Ketogenesis and ketone bodies
- When ketones become dangerous
- Lipogenesis
- Amino acids: build first, burn second
- The urea cycle
- Worked example: tracing an amino acid
- Common mistakes to avoid
- Key takeaways
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