Question

question 17
skin, hair, muscles, and enzymes are all made up of
lipids
organelles
carbohydrates
proteins
nucleic acids

Explanation:

Skin, hair, and muscles contain structural proteins. Enzymes are biological catalysts made of proteins (in most cases). Lipids are fats and oils, organelles are cell - components, carbohydrates are sugars and starches, and nucleic acids are DNA and RNA.

Answer:

D. proteins