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In an investigation into fermentation, yeast was grown in a flask of glucose solution for 20 hours at 20 °C - Scottish Highers Biology - Question 7
Question 7
In an investigation into fermentation, yeast was grown in a flask of glucose solution for 20 hours at 20 °C. The graph shows the concentrations of ethanol and gluco... show full transcript
Worked Solution & Example Answer:In an investigation into fermentation, yeast was grown in a flask of glucose solution for 20 hours at 20 °C - Scottish Highers Biology - Question 7
Step 1
What was the glucose concentration when the ethanol concentration was 3-3 grams per litre?
Answer
To find the glucose concentration when the ethanol concentration reaches 3-3 grams per litre, we need to reference the graph provided in the question. At the point where the ethanol concentration is at 3 grams per litre, we observe the corresponding glucose concentration from the graph.
Upon examining the graph, it is clear that the glucose concentration at this point is approximately 2-4 grams per litre. Therefore, the correct answer is:
C 2-4 grams per litre.