Page 47 - SCIENCE DLP T6 SK (SEMAKAN 2017)

Activity 3: Microorganisms Grow

Aim: To prove that microorganisms grow

Are microorganisms able to grow?

Apparatus and materials: ziplock bag, magnifying glass,
spray bottle, a slice of bread, water
Avoid touching the bread mould
Steps: with your hands.

1. 2.

Spray some water on both sides Put the bread in a ziplock bag. Remove
of the bread. some air from inside the bag and seal
it carefully.

3. 4.

Place the bag containing the bread in Start observing the surface of the bread
a dark place such as in a cupboard or on the fifth day until the seventh day.
a drawer. Observe the size of the bread mould.

Questions:
1. What can you observe on the surface of the bread?
2. What is the change in the size of the bread mould from the fifth
to the seventh day?
3. What can you conclude from this activity?

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