Alternative fuel sources

Question 0

Fats

Answer 0

Oxidation of one gram of fat produces twice as much ATP as one gram of carbohydrate

fat➡️glycerol + fatty acid
glycerol➡️glyceraldehyde 3-phosphate
fatty acids➡️acetyl CoA, NADH & FADH2

Question 1

Where else are fats used for?

Answer 1

• In second step of glycolysis

- Krebs cycle: fatty acids

Question 2

Proteins

Answer 2

Protein➡️amino acids
Amino acids (deaminated)➡️pyruvate, acetyl CoA or alpha-ketoglutarase

NH3 is excreted in the form of ammonia or urea.