Testing simple and complex sugars

Aim: To test a sample of food to determine whether it contains simple sugars
Method:
1. Place about 2 ml of the sample onto a test tube and then add 5 drops of benedict solution
2. Heat with a Bunsen until it changes colour. Do not boil.

Results:

Discussion: We dropped 5 drops of  Benedict solution to the food sample(apple). It was blue at first but after a few shakes it turned orange. The food sample turned orange because the Apple contains simple sugars.

Conclusion: The Apple contains simple sugars because it turned orange.
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Aim: To test if a sample food contains complex sugars.

1. Place about 2 ml of the sample in a test tube.
2. Add 3-5 drops of iodine and mix.

Results: If complex sugars (i.e. starch) are present the iodine solution will change to brown colour to a blue/black colour


Discussion: We know that the food sample contains complex sugar because when we added iodine solution to the food sample it turned brown to black/blue.
Conclusion:the food sample contains complex sugar because it changed colours

Science

           5 major parts of the Digestive system

 The Oesophagus is a tube that connects the mouth to the stomach that is 8 inches long. It runs behind the Trachea, heart and in front of the spine. It is the road for food and drinks to get to the stomach.

 The Stomach is a Large elastic bag that can expand to and hold many litres of food. It is located it the left side of the upper abdomen. The stomach produces hydrochloric acid to start breaking down the food you eat. There are animals with 4 stomachs called Ruminants. For example a:

The Small Intestine is around 20 feet long and about an inch in diameter. The small intestine is where 90 % of the digestion and absorption happens and the other 10% happens in the large intestine. Its main purpose is the absorption of nutrients and minerals from what we eat. It is a continues tube running from the stomach to anus. This is chicken intestine..You can eat it

 The Large intestine is the last part of the gastrointestinal tract and the digestive system vertebrates. This is where water is absorbed and the remaining waste material is stored as manure. It is transported into the rectum where is it stored until its egested.

 The liver the second largest organ in the human body and it has two large sections called the right and left lobes. The liver's job is to filter the blood coming from the digestive tracts before passing it to the rest of the body. It also detoxifies chemicals. It also turns proteins important for blood clotting and other uses. The liver is located it the right side of our belly and protected by the rib cage.