Question

There are twenty standard amino acids that make up all proteins. What four elements are found in all amino acids?

A.
oxygen, hydrogen, nitrogen, potassium

B.
carbon, hydrogen, oxygen, and nitrogen

C.
carbon, hydrogen, sulfur, phosphorus

D.
oxygen, hydrogen, sulfur, phosphorus

Answer 1

The correct answer is:

B. carbon, hydrogen, oxygen, and nitrogen

All standard amino acids contain these four elements.