Why does an Apple turn Brown?

Grade 6 Science Experiment 3 - "Why does an Apple turn Brown?"

Buy The Complete "Why does an Apple turn Brown?" Project for Only $5.00:

This is a downloadable e-book program. You will NOT receive a physical package shipped to you in the mail. The entire package will be immediately available for you to download and get started right away after ordering. This program is NOT available in stores, so you can only access it through this website.

Buy ALL 5 Grade 6 Projects for only $7.00:

Purpose:

The purpose of this science fair project is to explore enzymes and how they affect the coloration of various fruits and vegetables. Enzymes are proteins that act as a catalyst to speed up chemical reactions. Enzymes are present in a variety of situations from digestion in your body to turning a sliced apple brown. Enzymes are necessary because without enzymes it would take a significant amount of time to digest foods, etc.

The unique shape of each enzyme helps the enzyme to perform its proper function. If the shape of enzyme is altered in any manner then the enzyme won't complete its task properly. For example, the enzyme that changes an apple and potato to a brown color is known as catecholase. The catecholase enzyme can only function properly if the pH level of the apple or potato is natural. Therefore, in this science fair project we will alter the pH level in an apple to see if we can alter the shape of the catecholase enzyme. Will the apple still turn brown?

Hypothesis:

Altering the pH level of the apple will prohibit the catecholase enzyme from turning the apple brown.

Variables:

pH level of each apple and potato
pH level of lemon juice
pH level of saltwater

Materials Needed:

Three apples
Three potatoes
Lemon juice
Table salt
Water
Cup
Spoon
Vegetable peeler
Stopwatch
ph Test kit available from your science teacher or science supply store
Paper
Pencil

Buy The Complete "Why does an Apple turn Brown?" Project for Only $5.00:

Buy ALL 5 Grade 6 Projects for only $7.00:

Science Project Due?

Take a deep breath of relief.

You've found your experiment!

With the 24 HOUR SCIENCE PROJECTS package:

You are given immediate online access to FIVE complete science project guides.

You get a list of easy to find supplies.

(Most items are in your home now.)

You are given easy, step by step instructions ~ Hypothesis to Conclusion!

You have quick access to research materials.

You see examples of charts and graphs, and have access to Excel and Microsoft Works spreadsheets ready for you to plug in data, so your charts are created like magic!

You have our money back guarantee of your satisfaction.

YOU CAN HAVE A COMPLETE SCIENCE PROJECT IN 24 HOURS!

Click here now to get instant access...