GCEBiologyRespiration2019

Which of the following correctly describes the process of anaerobic respiration in yeast?

AGlucose is completely oxidised to carbon dioxide and water
BGlucose is partially broken down to produce ethanol and carbon dioxideCORRECT
CGlucose is converted to lactic acid and oxygen
DGlucose is broken down to pyruvate and water only
AI
Toaster Teacher
Why the answer is B, and why the others tempt you.
In anaerobic respiration in yeast (fermentation), glucose is partially broken down into ethanol (alcohol) and carbon dioxide without the use of oxygen. This is different from aerobic respiration where glucose is completely oxidised to carbon dioxide and water. Lactic acid is the product of anaerobic respiration in mammals, not yeast.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →

Practice more Biology questions

GCE Biology has thousands more questions like this — with Worked answers on every one.

Start practicing free →See all Biology questions