PROTEINS

AMINO ACIDS

• Proteins are long chains of smaller "links"
• that are bound together chemically
• The smaller links are amino acids
• Your digestive system breaks down proteins
• into amino acids

ESSENTIAL AMINO ACIDS

• Your body' proteins are made up of 20 amino acids
• Proteins only supply 11 of the 20
• The other nine must be supplied by your food
• These nine are called essential animo acids
• And like the name they are essential to your diet

COMPLETE AND INCOMPLETE PROTEINS

• Complete proteins contain
• all 9 amino acids
• Incomplete proteins only
• contain some of the
• amino acids

PROTEINS FOR VEGETARIANS

• Vegetarians can find protein
• in beans and rice which provide
• the essential amino acids
• in your body

WHAT CONTAINS PROTEINS

• Turkey and chicken, fish and cheese
• Pork and lean beef, tofu, and beans
• Yogurt, milk, and soy milk
• And nuts and seeds

FUN FACTS

• Proteins play a role for
• growth and repair for body tissue
• And 10-35% of your calories are proteins

FUN FACTS

• Your proteins in your body are made up
• of 20 different amino acids
• Your diet has to supply 9 amino acids
• These 9 amino acids are essential because
• your body cannot produce them

REVIEW QUESTIONS

• What is the definition of a protein
• How many amino acids are in your body
• How many animo acids do you supply by food
• What is a complete protein
• What percent of calories should come from proteins

ANSWERS

• A nutrient containing nitrogen, carbon,
• hydrogen, and oxygen. 2.) 20
• 3.) 9 4.) Proteins that contain all nine essential
• Animo acids, they come from animal source
• for example meats and fish. 5.) 10 to 35%