Question

question 5 of 5
which of the following is the correct definition for protein?
a. a form of carbohydrates which the body cant digest.
b. an essential nutrient that is the bodys primary source of short - and long - term energy.
c. an essential nutrient that provides long - lasting energy, helps store vitamins, protects vital organs, and keeps the body warm.
d. an essential nutrient that makes up more than 50 percent of your body weight, important for growth, building and maintaining muscles, and supplying the body with energy, among other things.

Explanation:

Proteins are macromolecules made of amino acids. They are crucial for growth (e.g., in children), muscle repair and building (e.g., after exercise), and can also provide energy. Option A is incorrect as proteins are not a form of indigestible carbohydrates (that would be fiber). Option B refers more to carbohydrates (primary short - term energy source) and fats (long - term). Option C describes fats (energy storage, vitamin storage, organ protection, insulation). Option D correctly highlights key functions of proteins.

Answer:

D. An essential nutrient that makes up more than 50 percent of your body weight, important for growth, building and maintaining muscles, and supplying the body with energy, among other things.