Chapter 6: Proteins and Amino Acids
Critical Thinking
1.
Jeffrey is a weight lifter. He has read that if he eats a high protein diet he will build
muscle more quickly. He is 5’8” tall and weighs 160 pounds. He drinks 2 or 3
protein milkshakes daily and includes 2 eggs, a 4-ounce hamburger, and a 6ounce steak in his daily intake.
a) How much protein do the eggs, hamburger, and steak provide?
b) Go to a store that sells supplements and read labels to determine how much
protein a typical “protein shake” adds to the diet.
c) How does his protein intake compare to his requirement?
2.
Jameela is concerned about her risk of heart disease because her father had a
heart attack and her mother is obese. She decides that if she becomes a lactovegetarian she will decrease her intake of total fat and saturated fat. Her original
and modified diets are shown below.
a)
Evaluate the substitutions she has made to determine if each reduces her
total fat intake? Her saturated fat intake?
b)
What modifications would you make?
Original Diet
Breakfast
Fried eggs with
Ham
Toast with butter
Orange juice
Coffee with milk and sugar
Modified Diet
Banana
Toast with peanut butter
Orange juice
Coffee with milk and sugar
Lunch
Turkey sandwich on
Whole wheat bread
Whole milk
Pear
Potato chips
Swiss cheese sandwich on
Whole wheat bread
Whole milk
Pear
Potato chips
Dinner
Spaghetti with meat sauce
Garlic bread with butter
Spaghetti with tomato sauce
Garlic bread with margarine
3.
Vegetable salad with bacon bits Vegetable salad with garbanzo beans
Ice cream
Ice cream
For each food in column A select one or more in column B that could be combined
with it to provide a meal of high quality protein.
Column A
Column B
Rice
Wheat bread
Corn Tortilla
Pasta
Tofu
Peanut Butter
Corn bread
Soy beans
Black-eyed peas
Tofu
Peanut butter
Cheese
Kidney beans
Cashews
Corn tortilla
Wheat bread
Chickpeas
Chicken