Lab Work: Enzymes and Temperature

Today, in Biology with Male, after we´ve studied enzymes and their function, we went to the lab and made an experiment to observe how enzymes (in this case Catalase, which breaks down hydrogen peroxide into water and oxygen, and it is found in potatoes) react to the changes of temperature. I worked with Luz and Bauti[TASK]

a. We put the potato and the test tube in water bath for 2 minutes so that they both reached the same temperature required in the 3 cases: 8°C, 30°C and 100°C.

b. – Independant variable: temperature

– Dependent variable: height of foam

– Fixed variables: volume of water and size of potato

c. As temperature increased, the height of the foam grew up to 30°C, which is the optimum temperature.

d. The enzyme worked best at 30°C.

e. At 100°C, no foam was produced because there was no activity in the enzyme.

Table of results

Temperature (°C)

Height of foam produced (mm)









Images from our experience

IMG_20150609_124048481_HDR IMG_20150609_125541295 IMG_20150609_125552149 IMG_20150609_125612964_HDR

2 comentarios en “Lab Work: Enzymes and Temperature

  1. Pingback: Lab Work: Enzymes and temperature | Delfi Miy Uranga

  2. Great job!
    Some corrections:
    – Unit of temperature: °C
    – Spelling: dependent
    – Check the scale in the graph.

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