L Carnitine for Fat Loss Supplements in Review transport of fatty acids PPTX Biochemistry: How Fats Enter the Powerhouse! Beta oxidation of fatty acids happens in the Mitochondrial Matrix, but there's a catch: Long Chain Fatty Acids (LCFAs) cannot cross the inner mitochondrial membrane on their Fatty Acid Transport an overview ScienceDirect Topics Carnitine Shuttle an overview ScienceDirect Topics