This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: TCA Cycle, Subject name: Biochemistry
Tricarboxylic acid cycle does not occur in 
Select and explain. 
A. Myocyte, B. Red blood cell, C. Neuron, D. Hepatocyte
B: Red blood cell
Answer: B: Red blood cell 
Explanation: RBCs - don't contain mitochondria-No TCA cycle Pathways that occur in mitochondria: * Fatty acid oxidation (b-oxidation) * TCA cycle * Oxidative phosphorylation and ETC * Ketone body synthesis and Utilization . Mitochondrial Protein and DNA synthesis