What elements make up amino acids? Look up the structures of the 20 amino acids in your textbook and list the 5 elements present.

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

Explanation:

Amino acids are organic molecules which base chemical structure is composed by:

- a carbon atom (C)

- a carboxyl group (-COOH)

- an amino group (-NH₂)

- a side chain- called R group- which varies in different amino acids. It can be composed by N, H, O, C and sometimes S.

According to this, the five chemical elements that are present in amino acids are:

- carbon (C)

- hydrogen (H)

- oxygen (O)

- nitrogen (N)

- sulfur (S)

it's all four options.