Food and Digestion

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  • Created by: Juliet
  • Created on: 28-03-13 06:26

FOOD AND DIGESTION!

The food you eat provides energy for cells, material needed for growth and repair and provides recourses for you to stay healthy and fight desieses. 

Carbohydrates: sugars and starches

- Made up of Carbon, Hydrogen, Oxygen. 

- Found in bread, pasta, rice. 

-Provide energy for cells.

Simple carbohydrates ( glucose and sucrose ) are sugars. Complex carbohydrates ( starch, glycogen and cellulose ) are long chains of sugars = starch. 

Proteins: 

- Made up of Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur. 

- Found in meat, fish, cheese. 

- Used for body building and repair. 

Proteins are long chains of Amino Acids

Lipids:

- Made up of Carbon, Hydrogen, Oxygen. 

- Found in butter, corn oil, eggs.

- Used as an energy store in the body.

Lipids are made up of fatty acids and glycerol joined together. 

Minerals and Vitamins: 

  • A - Makes chemicals in retina, protects suface of eye and connective tissue. (fish liver oils, liver, butter, margerine, carrots)
  • C - Sticks together cells lining surfaces in the body, e.g. mouth. (fresh fruits especially citrus fruits, and vegetables)
  • D - Helps bones absorb calcium and phosphorus. (fish liver oils, cream, butter, also made in skin in sunlight)
  • Calcium - Makes bones and teeth. (dairy products, fish, bread, vegetables) 
  • Iron - Makes haemoglobin in red blood cells to carry oxygen. (red meat, liver, eggs, green leaft vegetables) 

WATER - Used as a solvent. Breakes up large molecules by hdrolysis, carries substances around the body. 

FIBRE - Used for bulk to give the muscles of the gut something to work on. It absorbs lots of water. 

DIGESTION

The food you eat is made up of large insoluble molecules.

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