A gallon of milk expired and has soured because the milk enzyme lactase turned the milk protein lactose into lactic acid. Which of the following types of spoilage could have occurr... A gallon of milk expired and has soured because the milk enzyme lactase turned the milk protein lactose into lactic acid. Which of the following types of spoilage could have occurred?
Understand the Problem
The question is asking about the biological process that leads to milk souring, specifically identifying the type of spoilage that occurs when lactose is converted into lactic acid. The answer choices provide different types of spoilage to select from.
Answer
Fermentation
The type of spoilage that occurred is fermentation.
Answer for screen readers
The type of spoilage that occurred is fermentation.
More Information
Fermentation occurs when microorganisms convert sugars like lactose in milk into acids like lactic acid, resulting in a sour taste.
Tips
A common mistake is confusing fermentation with putrefaction, which involves protein breakdown.
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