The diagram shows some apparatus used to investigate respiration. Yeast, warmwater and substance Z were put into a test-tube. After a while, the limewater began togo cloudy.What is substance Z?A alcoholB glucoseC nitrogenD oxygen
Question
The diagram shows some apparatus used to investigate respiration. Yeast, warmwater and substance Z were put into a test-tube. After a while, the limewater began togo cloudy.What is substance Z?A alcoholB glucoseC nitrogenD oxygen
Solution
The substance Z in this experiment is likely to be glucose (option B). This is because yeast undergoes fermentation in the presence of glucose, a process in which it converts glucose into alcohol and carbon dioxide. The carbon dioxide produced is what causes the limewater to go cloudy, as limewater is used as a test for the presence of carbon dioxide. Therefore, glucose is the most likely substance Z.
Similar Questions
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