Problem 83
In liver cells, galactose is converted to glucose 6 -phosphate in a four-step process; it then enters glycolysis. People with the genetic disease galactosemia lack one or more of the enzymes necessary to convert galactose to glucose 6-phosphate; galactose instead is converted to undesirable molecules that damage various organs. This disease can be controlled by a careful diet. What food or foods are a major source of galactose in the diet?
Problem 84
It is important to avoid air when making wine, so a novice winemaker added yeast to fresh grape juice and placed it in a sealed bottle to avoid air. Several days later, the lid exploded off the bottle. Explain the biochemistry responsible for the exploding lid.
Problem 85
Is the same net production of ATP observed in the complete oxidation of fructose as is observed in the complete oxidation of glucose? Why or why not?
