Lab paper part 2 instructions - due the night before your next lab

Biology 157 Lab Paper – Part 2

Methods(5pts)

Detail the procedure that was completed. Tell how you performed the experiment in past tense; do not write a recipe. Be sure to include all measurements needed to repeat the experiment.

Results

Graphs (10pts)

• 2 graphs are needed.
  
  
  • A line graph comparing theaveragetrial data from each condition - you need to calculate the averages to produce this graph
  
  
  
  

(ex. Fig. 1 The Effect of Temperature on the Rate of Catalase Activity in Potato)

• A bar graph comparing the final volume collected for each condition - again, this is the average final volume for each condition

(ex. Fig. 2 The Effect of Temperature on Total Oxygen Produced due to Catalase Activity in Potato)

• Be sure to use descriptive titles and label graphs correctly.


• Graphs may be produced in Excel or Sheets and copied to your document.

Data description, paragraph format (15pts)

• Describe the data by referring toeachgraph


• Give actual data (#’s).

ex. The rate of catalase activity at room temperature was similar to the rate of catalase activity at 36°C (Fig.1). After 2 minutes the two reactions produced, 34mm and 32mm of oxygen respectively. But the 4°C condition produced almost twice as much oxygen at 2 minutes, 60mm (Fig. 1).

Discussion(30pts)**This section makes clear if you understood your experiment or not. Here you are analyzing the data, relating it to your hypothesis and discussing the relevance of the data.

1stparagraph -

• Restate the hypothesis. Does the data support the hypothesis?


• Explain by analyzing the data. Give conclusion statements that are specific to the data. Refer to your graphs

ex. Green beans produced 59% more oxygen in 60 seconds, than white potatoes, sweet potatoes and zucchini (Fig.5). This indicates that green beans contain more catalase than white potatoes, sweet potatoes and zucchini.

2ndparagraph - Discuss why you believe your variable had the effect that it did.

• Why did the experiment yield the data that you collected? (ie.If temperature affected catalase activity, why? What is known about the effect of temperature on enzymes?)


• If your data did not support your hypothesis, formulate a new hypothesis. What support do you have for it?

3rdparagraph

• Relate how your data may be useful to the scientific community. Why is this interesting or useful data? How could it effect humans?


• What other future experiments could be carried out to further test this hypothesis? (or your new hypothesis?)It would be useful to further examine this by…