Answer
Circle NH2, an amino group; COOH, a carboxyl group; and OH, ad hydroxyl group on the R group. This is an amino acid, a monomer of proteins.
Work Step by Step
The OH group makes its polar amino acid.
Campbell Biology: Concepts & Connections (9th Edition)
by Taylor, Martha R.; Simon, Eric J.; Dickey, Jean L.; Hogan, Kelly A.; Reece, Jane B.
Published by
Pearson
ISBN 10:
0-13429-601-X
ISBN 13:
978-0-13429-601-2
Chapter 3 - Review - Page 53: 10
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