Energy nutrition - the metabolism of carbohydrates and fats - Energy-yielding metabolism
4 important questions on Energy nutrition - the metabolism of carbohydrates and fats - Energy-yielding metabolism
NAD+ cannot pass the inner membrane of mitochondria, and therefore the NADH produced by glycolysis cannot enter the mitochondria for reoxidation. Therefore substrate shuttles are used. Name them.
- Glycerophosphate shuttle > important in muscles.
How many ATP costs the conversion of lactate to glucose and where is this done?
From which sources does acetylCoA arises?
- B-oxidation of fatty acids
- Ketone bodies
- Alcohol
- Amino acids that give rise to acetylCoA or acetoacetate
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What are the intermediates of the citric acid cycle alfa-ketoglutarate, oxaloacetate and citrate used for?
- oxaloacetate is also the precursor for glucose synthesis in the fasting state (gluconeogenesis)
- Citrate is the source of AcetylCoA for fatty acid synthesis in the cytosol in the fed state.
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