Human Digestive System
Rat Dissection in Lab A comming soon
Rat Dissection by Charlotte Jess and Destiny
How your digestive system works
Inside the Stomach
Pill Camera Swallowed
Tapeworm Infestation
What does the liver do?
What does the pancreas do?
How do your Kidneys do?
How the heart actually pumps blood
The Heart, Part 1
Heartbeat sound
Transporting a beating heart for transplant!
How do vitamins work?
How sugar affects the brain
What is fat?
How do carbohydrates impact your health?
Food Tests
Food TestsFood Tests:
Test
|
Tests for
|
Positive Result
|
Method
|
Iodine
|
Starch
|
Turns Blue-Black
|
Add a drop of iodine to food solution
|
Biuret
(CuSO4 + NaOH)
|
Protein
|
Turns Purple-Lavender
|
Add a few drops of copper sulphate (CuSO4) shake and wait, then and sodium hydroxide (NaOH) to food solution
|
Benedict’s Solution
|
Sugar
|
With heat turns Brick-Red precipitate
|
Add a few drops of Benedict’s to food solution and heat gently of a bunsen
|
Ethanol Emulsion
|
Fats
|
White Emulsion
|
Add 2ml of ethanol to food solution and shake/mix, then add 2ml of water to solution and shake/mix
|
DCPIP
|
Vitamin C
|
Turns Colourless
|
Add a few drops of DCPIP to food solution and shake/mix then wait (NB: will turn pinky due to the presence of acid - false positive)
|
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