Question

Question 28 Not yet answered Marked out of 6 P Flag question Flask A contains yeast cells in glucose-minimal salts broth incubated at 30°c with O2 for 10 hours. Flask B contains yeast cells in glucose-minimal salts broth incubated at 30°c without 02 10 hours. Which culture (A or B) produces more ATP? Which culture (A or B) produces more alcohol? Which culture (A or B) has the shorter generation time? Which culture (A or B) uses less glucose? Which culture (A or B) has the greater cell concentration? Which culture (A or B) is likely to be in stationary phase? Drag and drop from the answers below. Flask A Flask B

Answer 1

Question 28 Not yet answered Marked out of 6 p Flag question Flask A contains yeast cells in glucose-minimal salts broth incubated at 30°C with O2 for 10 hours. Flask B contains yeast cells in glucose-minimal salts broth incubated at 30°c without 02 10 hours. Which culture (A or B) produces more ATP? Flask A Which culture (A or B) produces more alcohol? Flask B Which culture (A or B) has the shorter generation time? Flask A Which culture (A or B) uses less glucose? Flask B Which culture (A or B) has the greater cell concentration? Flask A Which culture (A or B) is likely to be in stationary phase? Flask B Drag and drop from the answers below. Flask A Flask B

Aerobic fermentation of yeast prodces more ATP as compared to anaerobic fermentation.

If yeast ferments the sugar anaerobically, it can only produce 74 kJ/mol sugar, so growth is retarded, but it produces a lot of alcohol.

The generation time is more in presence of oxygen compared to in absence of oxygen.

Culture A uses most glucose, because in presence of oxygen the glucose is completely converted in to carbon dioxide and water. While in absence of oxygen, glucose is converted in to alcohol, and it uses less glucose comparatively.