1. What locations or conditions will you sample (minimum
6. Reassess your hypothesis. Was your hypothesis correct?
of 2, maximum of 4)?
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7. What can you conclude from your experiment?
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2. What is your hypothesis? (Where do you think you will find the
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most bacteria? Why?)
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8. Based on what you found from your experiment, do you have
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any health recommendations?
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4. Describe in steps how you took your samples.
Be specific - tell exact locations and conditions.
The characteristics of a colony (shape, size, color) are termed the
colony morphology. Colony morphology is a way scientists can
identify bacteria.
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For your colonies, look at:
· Form - What is the basic shape of the colony? (circular,
filamentous, etc.)
· Elevation - What is the cross sectional shape of the colony?
Observe the colony from the side.
· Surface - How does the surface of the colony appear? (smooth,
glistening, rough, dull (opposite of glistening), rugose
(rough/wrinkled), etc.)
· Chromogenesis (color) - For example, white, buff, red, purple
Examples of form, and elevation:
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(Info from sciencebuddies.org)
5. After 5-7 days, make another drawing of your plate and describe
it. Use color and be specific - How does it look? How many
colonies? Color? Fuzzy? Texture?
Description:
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3. Make a drawing of your Petri dish and label your samples on it.