Biology Food And Energy Flashcards
(21 cards)
What are the main functions of food?
~energy for processes such as movement and development
~ The raw materials for growth and repair
~To protect the body from illness and insure that it remains healthy
7 dietary components
Carbohydrates~starch,sugars
Protein~meat
Fat~oil,butter
Vitamins~A,B,C,D
minerals~calcium,iron
Water
Fibre
What is meant by having a balanced diet?
Eating all nutrients in the correct proportions
A good group made up of simple sugars and complex carbohydrates that are a source of energy
Carbohydrate
A complex carbohydrate made up of many glucose molecules
Starch
A simple sugar found in milk
Lactose
A simple sugar that is a fast releasing energy source
Glucose
A complex carbohydrate that we can use as an energy store in our livers that can be broken down into glucose when needed
Glycogen
A complex carbohydrate that makes up plant walls
Cellulose
A food group that is used for growth and repair
Protein
Small, simple molecules that make up proteins
Amino acids
Chemical used to test for starch (positive result = yellow brown ~blue black)
Iodine
Chemical used to test for sugar (positive result= blue~ brick red precipitate)
Benedicts
Chemical used to test for protein(positive result= blue~purple)
Biuret
Small molecules that make up fats (lipids)
Fatty acids and glycerol
The unit of energy
Kilojoule
Being very overweight
Obesity
Carbohydrates in our diet include simple.
sugars such as sucrose , glucose and lactose
Complex carbohydrates=
Cellulose, glycogen and starch. Complex carbohydrates consist of long chains of sugars joined together
Starchy foods include=
Bread,rice,pasta,potatoes,
cereals
Sugary foods include=
