Biology - Food Flashcards
What is a balanced diet?
A balanced diet consists of the right amounts of food
What foods are needed for a balanced diet?
Carbohydrates, Fats, Proteins, Vitamins, Minerals and Water
What do carbohydrates do?
They give energy
Give three types of carbohydrates and examples
Sugar, found in jam and honey for a quick release of energy
Starch, found in potatoes, rice and bread for a slow release of energy
Fibre, found in bran and vegetables and it prevents constipation
What do fats do?
They store energy
What are fats needed for?
They are needed to insulate the body
Give two sources of fats
Butter, Cream, Milk and Oils
What is protein needed for?
It is needed to make muscles and hair and to repair body parts
Give two sources of protein
Meat, Fish, Eggs, Milk and Nuts
What is vitamin C needed for?
It’s needed to keep skin and gums healthy
Give a source of vitamin C
Oranges (Citrus fruits)
What is vitamin D needed for?
It’s needed to form strong bones and teeth
Give a source of Vitamin D
Milk and Butter
What is iron?
It forms red blood cells
Where can you find iron?
In red meat
What is calcium needed for?
Calcium is needed to form strong bones and teeth
Give a source of calcium
Milk and Cheese
What are the two functions of water?
It transports substances around the body and allows chemical reactions to take place
What is the food pyramid?
It shows how much of each food type is needed for a healthy diet
What is energy measured in?
Kilojoules (Kj/g)
What is food?
Food is needed for growth, energy, repair and to prevent diseases [gerp]
To test food for starch [experiment]
1- Add a few drops of Iodine solution to some food [potatoes, bread, water]
2- Observe any changes in colour
Result- Iodine runs black in the presence of starch [bread, potatoes]
Iodine does not turn black in water
Conclusion - iodine is the test for starch
