<prompt> Mature RBC contains all except -Enzyme of HMP shunt pathwayEnzyme of TCA cycleGlycoytic enzymesPyridine nubleotides  <response>: Ans:B . Enzymes of TCA cycle Erythrocytes RBC lack mitochondria so TCA cycle enzymes and completely rely on glucose as their metabolic fuel. They metabolize it by anaerobic glycolysis. 