Nutrition

Front 1

Define Nutrition

Back 1

The taking in of nutrience of organic substances and minerla ions, conatining raw materials or energy for growth and tissue repair.

Front 2

List the chmical elemnts that make up
1) carbohydrates
2) fats
3) proteins

Back 2

1) Carbohdrates is Carbon, Hydrogen, Oxygen
2) Fats is Carbon, Hydrogen, Oxygen
3) Proteins is Carbon, Hydrogen, Oxygen and Sulphur and Nitrogen

Front 3

Descibe the synthesis of:
1) Glyglogen
2) Proteins
3) Lipids

Back 3

1) Glyclogen is made from simple sugars to starch and glyclogen
2) Amino acids join to make proteins.
3) Lipids - 3 fatty acids joined to one glycerol to make lipids [fats, oils]

Front 4

Describe the test for starch

Back 4

- Add a few drops of iodine solution. If stach is present it will turn from yellow brown to blue black

Front 5

Describe the test for reducing sugars e.g. glucose and maltose

Back 5

- Add 20 ml of benedicts solution --> shake --> heat for 5 minutes in a boiling water bath until it changes to orange precipitate.

Front 6

Describe the test for protein

Back 6

- Add biuret solution --> shake if it turns purple protein is present

Front 7

Describe the test for fats

Back 7

- Add ethanol to the food --> shake then add water. It should turn to a white emultion if the fat is present

Front 8

Describe the source of and the importance of carbohydrates

Back 8

Bread, pasta, and fruit.
Used for energy

Front 9

Describe the source of and the importance of fats

Back 9

Seeds, nuts, meat, and dairy.
Used for insulation and for making cell membranes and as an energy store

Front 10

Describe the source of and the importance of protein

Back 10

meats, eggs, nuts, and fish.
Used for growth and repair

Front 11

Describe the structure and function of a red blood cell.

Back 11

Biconcave disc to give a larger surface area.
Contains haemoglobin to bind with the oxygen.
Carries oxygen from the lungs to respiring cells.

Front 12

Describe the structure and function of ciliated epithelial cells.

Back 12

Ciliated cells have hair like extensions called cilia.
They waft, moving mucus to the throat or mouth.

Front 13

Goblet cells

Back 13

Found intrerspersed between ciliated cells. They make mucus which traps dust and bacteria, protecting the lungs.