Standard Science Primary 3 Diversity

Jun Jie added some yeast to bread dough. After an hour, he noticed the dough had increased in size. Which characteristic of yeast is shown?

A Yeast can make its own food.
B Yeast is a non-living thing that reacts to heat.
C Yeast can reproduce by seeds.
D Yeast is a living thing that can grow.
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Worked Solution

Step 1: Recognize yeast as a micro-organism (living thing). Step 2: Observe the change (dough increased in size). Step 3: An increase in size in a living context is a sign of growth/reproduction.

Correct answer: Yeast is a living thing that can grow.

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