Which of the Following Packs the Most Calories Per Gram

Question

Which of the following packs the most calories per gram?
A)carbohydrates
B)proteins
C)fats
D)amino acids

Accepted Answer

Fats contain 9 calories per gram, while carbohydrates and proteins contain 4 calories per gram. Amino acids are the building blocks of proteins and do not contain calories on their own.