Expression of IdeasMediumExplaining a cause
Expression of Ideas practice question
While researching a topic, a student has taken the following notes:
- Bread goes stale mainly because its starch recrystallises, not because it dries out.
- Recrystallisation happens fastest at refrigerator temperatures.
- At room temperature it is slower; when frozen it almost stops.
- Reheating bread briefly reverses some of the staling.
The student wants to explain why refrigerating bread is a poor way to keep it fresh. Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A. Bread goes stale mainly because its starch recrystallises, and that process runs fastest at refrigerator temperatures, so a fridge makes bread stale sooner than a cupboard would.Correct
- B. Bread goes stale over time.
- C. Freezing bread almost stops staling.
- D. Reheating bread reverses some staling.
Answer: A. Bread goes stale mainly because its starch recrystallises, and that process runs fastest at refrigerator temperatures, so a fridge makes bread stale sooner than a cupboard would.
The mechanism and why the fridge speeds it.
Why the other answers are wrong
- B. Bread goes stale over time.
- No reason given.
- C. Freezing bread almost stops staling.
- About freezing, not refrigerating.
- D. Reheating bread reverses some staling.
- About reversing, not preventing.
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