<prompt> Which of the following is the source of nutrition for the cancer cells?GlycolysisOxidative phosphorylationIncrease in mitochondriaFrom a fast food joint  <response>: Cancer cells exhibit a high rate of aerobic glycolysis. Cancer cells take up large amounts of glucose and metabolize it to lactic acid, even in the presence of oxygen the so-called Warburg effect. It is due to a defect in the respiratory chain, so that tumor cells compensated for this by producing more ATP glycolysis. Tumor cells have less mitochondria than normal cells and they contain a mitochondrial-bound isozyme of hexokinase HK-2 that is not subject to feedback control, allowing increased uptake of glucose. Ref: Murray R.K., Jacob M., Varghese J. 2011. Chapter 55. Cancer: An Overview. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell Eds, Harpers Illustrated Biochemistry, 29e. 