Question

Sample	Rate of CO2 production (mm/min)
Fructose	2.65mm/min
Glucose	3.3mm/min
Sucrose	2.05mm/min
Starch	.85mm/min
Water	0 mm/min

Explain these results. Why did glucose result in the highest rate? Why did sucrose result in a lower rate than fructose, and starch even lower? Recall that sucrose is a disaccharide composed of glucose and fructose, and that starch is a polysaccharide composed of many glucose molecules.

Answer 1

Co2 is produced during fermentation as a by product

Glucose is the highest because it can enter the glycolysis directly while fructose has to be converted to fructose 6 phosphate which requires energy to enter glycolysis so its slow

Sucrose is even more slow as it has to be first hydrolyzed to glucose and fructose.hydrolysis as well as conversion of fructose to fructose 6 phosphate requires energy so the co2 production is low

Starch is even lower then sucrose because it is a polysaccharide and has less reducing ends from where the glucose can be hydrolyzed

Sucrose is disaccharide which can be  more easily hydrolyzed