The different shapes and functions of different proteins are determined by

The different shapes and functions of different proteins are determined by THE R GROUPS OF THE AMINO ACIDS THEY CONTAIN.

Explanation:

Amino acids are organic compounds which have an amino group and a carboxyl group. They are categorised by the presence of functional group, R.

The R group gives the properties such as shapes size, polarity, pH and function for each each amino acid.

oxygen +1 most likely

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.