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Mrs. Pfahnl’s Bio A Lab: Catalase

Posted on 29 9 月, 202025 12 月, 2022 By 凯波 Mrs. Pfahnl’s Bio A Lab: Catalase无评论

Mrs. Pfahnl’s Bio A Lab: Catalase

September 29, 2020    Purpose: Investigate catalase activities in different fruits or vegetables.

Materials:

1. Hydrogen peroxide 3% from any drug store2. Dish washing detergent any brand

3. Potato (white, yellow or sweet) or carrot

4. Avocado

5. Apple

6. Tap water

7. Three narrow transparent cups labeled 1-3

8. measuring cup

9. measuring spoon: 1 table spoon

10. ruler

11. cutting board

12. knife

Procedures:

1. Add half cup of water to each cup

2. Add one drop of dish washing detergent into each cup and mix

3. Add 1 table spoon hydrogen peroxide 3% into each cup and mix

4. cut potato/carrot, avocado and apple into 1 cm cubes

5. Add 6 cubes of potato/carrot into “cup 1”

6. Add 6 cubes of avocado into “cup 2”

7. Add 6 cubes of apple into “cup 3”

8. Measure the thickness of the foam at 3 min, 20 min

Thickness of foam at 3 min, cup 1=0.5 cm, cup 2=1 cm, cup 3 a few bubbles.
Thickness of foam at 3 min, cup 1=1 cm, cup 2=2 cm, cup 3 not much bubbles.

Observation and data analysis

1. Take pictures to document your experiment (34% of your grade)

2. Make data chart and graph for each cup. X= time Y=thickness of foam (33% of your grade)

3. Make Flipgrid video to explain the observation. Which plant material has the most catalase activity and which one has the least? (33% of your grade)

Mrs. Pfahnl’s Bio A Lab, 教育

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