Question

what elements are in proteins? how is this different from carbohydrates?

Explanation:

Proteins are composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. Carbohydrates are made of carbon, hydrogen, and oxygen. The key difference is that proteins contain nitrogen (and sometimes sulfur) while carbohydrates do not.

Answer:

Elements in proteins: carbon, hydrogen, oxygen, nitrogen (sometimes sulfur). Difference from carbohydrates: proteins have nitrogen (and sometimes sulfur), carbohydrates only have carbon, hydrogen, oxygen.