Question

1. substance which contains carbon (1 point)

inorganic substance
micronutrient
macronutrient
organic substance

1. protein containing all nine essential amino acids (1 point)

essential amino acid
incomplete protein
complete protein
complementary protein

1. proteins which can be paired in order to form a complete protein; categories include grains, legumes, nuts and seeds (1 point)

complementary protein
essential amino acid
incomplete protein
complete protein

1. essential nutrient in the form of sugar, starch or fiber; composed of carbon, oxygen and hydrogen; main source of energy for the body (1 point)

vitamin
carbohydrate
protein
fat

Explanation:

1. Organic substances are defined as compounds that contain carbon (with exceptions like carbon dioxide, which are inorganic, but the core defining trait of organic materials is carbon content).
2. A complete protein is one that naturally contains all nine essential amino acids required for human health.
3. Complementary proteins are incomplete proteins from different food groups (like grains and legumes) that can be combined to provide all essential amino acids, acting as a complete protein.
4. Carbohydrates are organic nutrients made of carbon, hydrogen, and oxygen, existing as sugars, starches, or fiber, and are the body's primary energy source.

Answer:

1. D. Organic Substance
2. C. Complete Protein
3. A. Complementary Protein
4. B. Carbohydrate