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Which conditions would be best for the fermentation of sugars by yeast? (A) Low oxygen concentration and a temperature between 25°C and 35°C (B) High oxygen concentration and a temperature between 25°C and 35°C (C) Low oxygen concentration and a temperature between 45°C and 60°C (D) High oxygen concentration and a temperature between 45°C and 60°C - HSC - SSCE Chemistry - Question 1 - 2002 - Paper 1
Question 1
Which conditions would be best for the fermentation of sugars by yeast? (A) Low oxygen concentration and a temperature between 25°C and 35°C (B) High oxygen concen... show full transcript
Worked Solution & Example Answer:Which conditions would be best for the fermentation of sugars by yeast? (A) Low oxygen concentration and a temperature between 25°C and 35°C (B) High oxygen concentration and a temperature between 25°C and 35°C (C) Low oxygen concentration and a temperature between 45°C and 60°C (D) High oxygen concentration and a temperature between 45°C and 60°C - HSC - SSCE Chemistry - Question 1 - 2002 - Paper 1
Step 1
Identify the ideal conditions for yeast fermentation
Answer
Yeast fermentation occurs best in anaerobic conditions, meaning low oxygen concentration is preferable. Additionally, the optimal temperature range for yeast activity is typically between 25°C and 35°C. Therefore, option (A) — Low oxygen concentration and a temperature between 25°C and 35°C — is the best choice.