Question

answer these questions based on your understanding of the properties of macromolecules as well as the data provided.
typical american diet* percentage of calories
49% 35% 16%
classic ketogenic diet percentage of calories
90% 8% 2%
calories per gram of each macro
1g protein 4 calories
1g carbs 4 calories
1g fat 9 calories
a ketogenic diet is one where the majority of ones calories comes from fats instead of carbohydrates. the percentages of calories from each macromolecule comes on the pie chart presented.
if the fda (food and drug administration) recommends 2000 calories per day, how many calories from fat should be eaten in a ketogenic diet?
using your answer from the previous question, if that is the amount of calories that should be consumed how many grams of fats would that equate to?
how many more calories of protein should a person on a typical american diet than someone with a ketogenic diet eat?
if the fda (food and drug administration) recommends 2000 calories per day, how many calories from protein should be eaten in a ketogenic diet?

Explanation:

Step1: Calculate calories from fat in ketogenic diet

From the pie - chart, 90% of calories in a ketogenic diet come from fat. If the recommended daily calorie intake is 2000 calories, then the calories from fat is $2000\times0.9 = 1800$ calories.

Step2: Calculate grams of fat

Since 1 gram of fat has 9 calories, the number of grams of fat is $\frac{1800}{9}=200$ grams.

Step3: Calculate protein calories in typical American diet

In a typical American diet, 16% of calories come from protein. So for a 2000 - calorie diet, the protein calories are $2000\times0.16 = 320$ calories.

Step4: Calculate protein calories in ketogenic diet

In a ketogenic diet, 2% of calories come from protein. So for a 2000 - calorie diet, the protein calories are $2000\times0.02=40$ calories.

Step5: Calculate the difference in protein calories

The difference in protein calories is $320 - 40=280$ calories.

Step6: Calculate protein calories in ketogenic diet (re - stated for clarity)

As calculated before, for a 2000 - calorie diet, protein calories in a ketogenic diet are $2000\times0.02 = 40$ calories.

Answer:

1. 1800 calories
2. 200 grams
3. 280 calories
4. 40 calories