Download Unit 2 Protein PowerPoint

The Body’s Building Blocks
Chapter 7
 Protein is an energy yielding nutrient composed of carbon,
hydrogen, oxygen, and nitrogen
 The presence of nitrogen makes it different from carbs and
fats
 Amino acids are the building blocks of protein molecules
 You need all the amino acids to make the
proteins your body needs for good health
 Your body can make 11 amino acids
which are referred to as dispensable or
non-essential amino acids
 The remaining 9 amino acids CANNOT be
made by the body and must be consumed
in the diet. These are referred to as
indispensable or essential amino acids
 Build and Maintain Tissues
 Make Important Compounds
 Regulate Mineral and Fluid Balance
 Maintain Acid-Base Balance
 Carry Vital Substances
 Provide Energy
 Activity: Protein Function Billboards
 Your group will be given one of the 6 main functions of
protein at random. Use your textbook to read more about
the function you have been assigned (pages159-161).
Create a billboard to advertise that particular function.
Place your illustration on the paper provided. Be sure to
use an attention-getting slogan, logo, and lay-out.
 Once finished, find a complementary color of construction
paper to glue your billboard design on to
 On a separate sheet of paper, summarize the message of
your billboard. Make sure everyone’s names are on the
summary sheet.
 Examples:
 Beef, veal, pork, lamb, poultry, fish, eggs, milk, yogurt, and
cheese
 Although meat is an excellent source of protein, some
meats and even dairy products are also high in saturated
fats
 Examples:
 Grains, nuts, seeds, and legumes (peanuts, black-eyed peas,
kidney beans, lentils, chickpeas, and lima beans)
 Soy products are an especially rich source of plant protein
 Most fats in plant sources are polyunsaturated and plant
foods contain no cholesterol
 Generally high in fiber and low in saturated fats
 These are all positive factors in terms of heart health and
cancer risk reduction
 Proteins in various food sources differ in their quality
 Animal foods are sources of complete proteins, meaning
they supply all of the indispensable (essential) amino acids
 Protein provided by plant sources are lower quality. These
are called incomplete proteins because they may be
missing some of the indispensable amino acids
 Good news! You can get the amino acids missing from one
incomplete protein source by combining it with another
incomplete protein source
 Two or more incomplete proteins that can be combined in
order to provide all the indispensable amino acids are
called complementary proteins
 A general guidelines is to combine grains, nuts, or seeds
with legumes
 Examples:
 Peanut butter on whole wheat bread
 Corn tortillas with refried beans
 Sesame seeds+ chickpeas= Hummus
 Another way to extend the quality of incomplete proteins is
to combine them with complete proteins
 Example: Chicken and brown rice
 Activity: Meal Planning for a Vegetarian
 Your group will be given a specific type of vegetarian at
random. Using your textbook (page 163) define your type of
vegetarian on the paper provided.
 Using the resources available to you, create a daily meal
plan for your vegetarian including a breakfast, lunch,
dinner, and snack options.
 Make sure your meal plan includes the 6 main nutrients
and a variety of foods.
 Your body does not store protein, therefore you need to
consume it everyday
 The RDA for protein is 52 grams per day for 14-18 year old
males
 The RDA for protein is 46 grams per day for 14-18 year old
females
 Most athletes are able to meet their protein needs by
consuming their RDA for protein
 Athletes need more carbohydrates and fats for energy
expenditure during prolonged exercise and activity
 Protein can then be used to build and maintain muscle
 Sports that focus on strength or resistance training require
athletes to consume higher amounts of protein than those
with low intensity
 Most athletes can meet additional protein needs b including
a few more protein foods in their meal plan
 Protein & amino acid supplements are usually not necessary
 Deficiency of protein in the diet can lead to sickness and
other health related issues
 Excess protein in the diet can lead to:
 Liver and Kidney Problems
 Too much protein creates an over abundance of nitrogen waste created
by the liver
 Kidneys must excrete this waste
 Causes both organs to overwork and age prematurely
 Calcium Loss
 Diets high in animal proteins can contribute to calcium loss in the
bones
 Excess Weight Gain
 Body cannot store extra amino acids as a protein source
 Your body CAN, however, store them as energy by converting them to
fat
 Many high protein foods are also high in calories and bad fats