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Homework answers / question archive / 1)  Protein in a Vegetarian Diet      Marissa is 20 years old and weighs 130 lbs

1)  Protein in a Vegetarian Diet      Marissa is 20 years old and weighs 130 lbs

Health Science

1)  Protein in a Vegetarian Diet

     Marissa is 20 years old and weighs 130 lbs.  She recently stopped eating meat because she

     thought it would make her diet healthier.  Now, she has become concerned that her 

     vegetarian diet may not be as healthy as she thought.  She recorded her food intake for one

     day and analyzed it in iProfile.  Her analysis revealed that her diet provided 2200 calories, 64

     grams of protein, and 30 grams of saturated fat.


     A.   The RDA for protein is 0.8 grams of protein per kg of body weight.  Calculate Marissa’s

            RDA for protein




     B.    Does Marissa’s diet provide enough protein to meet the RDA?




     C.   According to the Dietary Guidelines for Americans, what is the maximum percentage of

            calories from saturated fat that is recommended for a healthy diet?




     D.   In Marissa’s diet analysis, what percentage of her calories came from saturated fat?



     E.    How does Marissa’s saturated fat intake compare to the recommendation for saturated





     F.    On the day that Marissa analyzed her food intake, she ate her typical lunch consisting of

            a grilled cheese sandwich, chips, and reduced-fat milk.  Why is this menu high in?

            saturated fat?



     G.   To reduce her saturated fat intake, Marissa wants to try a vegan sandwich.  Suggest a

            vegan sandwich that makes use of complementary plant proteins.  (Review Figure 6.15

            and the section on Complementary Proteins on page 161 of your text book.)






2.  Protein in Sports/Athletics


     Jonathan is a body builder who weighs 200 lbs.   He is concerned about his protein intake.


  1. The protein recommendation for strength athletes is 1.2 to 2.0 grams of protein per kilogram of body weight.  Calculate the amount of protein that Jonathan needs to consume to meet the recommendation for strength athletes




  1. Jonathan consumes about 3500 calories a day and 15% of his calories come from protein.  Would this meet Jonathan’s protein needs?  (Calculate the number of grams of protein and compare it to the recommended protein range that you determined for 2.A.







  1. If 15% of Jonathan’s calories come from protein, but he reduces his calorie intake to 2500 calories a day and continues to lift weights, will he meet his protein needs?  (How many grams of protein would he be consuming?





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