14.1 There are 2 main types of food groups Macronutrients Micronutrients Macro- fats, carbohydrates, lipids for energy Micro- vitamins & minerals small amounts- biochemical processes often these are “cooked “ out of foods- so don’t overcook your fruits & vegetables! Macronutrients- energy output is measured in Kilocalories (kcal or Cal)- a calorie is the amount of Heat needed to raise 1g of water 1 C
Which of the following is a macronutrient?
True or False
A calorie is the amount of heat needed to raise the temperature of 10 grams of water 1 C.
A food calorie is
Both b and c
Humans are ominvores ( eat plants & animals) Food is used for life processes-growth, movement, repair of tissue, heat etc.
People need 2000-2800 kcal/day
- made of carbon, hydrogen and oxygen in a 1:2:1 ratio
Sugars ( simple) and starches (complex)
Used for energy source
Which of the following is a carbohydrate?
Large compound made of amino acids
Provides construction materials for body-blood, muscle, skin, enzymes etc.
N is in proteins ( C,H,O also)
Made of 20 amino acids; 12 can be made by body; 8 need to come from food ( 8 essential amino acids)
Meats, eggs, dairy, some plants-legumes (peas, peanuts), beans
What element is found in proteins, but not carbohydrates?
True or False
Proteins are used for energy.
Proteins have _____ of energy.
How many amino acids are there?
Lipids- 3 fatty acids attached to a glycerol molecule