Biology Food And Energy Flashcards
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
