Effect of Temperature and Surface Area on The Activity of Digestive Enzymes

Effect of Temperature and Surface Area on The Activity of Digestive Enzymes Paper

Assignment: Digestive Enzymes

Your digestive system uses both physical and chemical means to break down and metabolize your food. In this activity, you will investigate the effects surface area and temperature have on the ability of an enzyme to break down the proteins found in egg whites.

Purpose

Observe enzyme activity and the effect of temperature on enzyme activity.

Testable Question and Hypothesis

Based on additional research and the purpose of this lab activity, propose a testable question.

Then, write out a hypothesis related to the testable question.

 Procedure

1. Read the procedure instructions and create a data table for recording your observations.

2. Cut four identical cubes of egg white from a hard boiled egg. The cubes should be approximately 1 cm3.

3. Place each cube of egg white in its own small container.

4. Cover the first piece of egg white with pineapple juice.

5. Chop the second piece of egg white into tiny pieces before covering it with pineapple juice.

6. Cover the third piece of egg with water.

7. Boil a small amount of pineapple juice and let it cool. Use this to cover the fourth piece of egg white.

8. Place all four containers in a safe place for 24 hours.

9. Record observations before and after the egg white pieces have been in their liquids for 24 hours.

Safety

Performing hands-on lab activities is another way to learn and discover how science concepts apply to our everyday lives. However, it can also be dangerous if you do not take steps to perform these activities safely. We have made every effort to ensure that these activities are safe to perform in the presence of an adult (ex. teacher or parent). It is important for you to use good judgment and exercise every precaution in order to avoid accidents that may result in injury.

 If you have any questions about the materials or procedure of a lab activity, you are to contact your teacher prior to beginning any lab activity.

Instructions

Your task is to communicate the results of your tests in a formal lab report. For guidance in the formatting of a lab report, review the Formal Lab Report lesson in the Scientific Skills and Formatting module of the Introduction unit in this course.

Assessment Details

Your submission should include the following:

 ? The results from your experiment written in your own words ? Proper formatting of your results section as outlined in the Formal Lab Report lesson located in the Scientific Skills and Formatting module

? Any photos you feel are necessary to effectively communicate your results from the experiment

? All in-text citations and a reference list according to the APA style guide for sources used in your report

Upload your submission to the Assignment: Digestive Enzymes Dropbox.