All of the following are true regarding amino acid side chains except: a. Five amino acids of the 20 common amino acids have rings in their structures. O b. Methionine and cysteine are the two amino acids that contain sulfur atoms. c. Ser and Cys are two amino acids that differ from each other by only one atom. O d. Histidine's ring structure results in its being categorized as aromatic or basic, depending on pH.

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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All of the following are true
regarding amino acid side chains
except:
a. Five amino acids of the 20
common amino acids have
rings in their structures.
b. Methionine and cysteine are
the two amino acids that
contain sulfur atoms.
c. Ser and Cys are two amino
acids that differ from each
other by only one atom.
O d. Histidine's ring structure
results in its being
categorized as aromatic or
basic, depending on pH.
Transcribed Image Text:All of the following are true regarding amino acid side chains except: a. Five amino acids of the 20 common amino acids have rings in their structures. b. Methionine and cysteine are the two amino acids that contain sulfur atoms. c. Ser and Cys are two amino acids that differ from each other by only one atom. O d. Histidine's ring structure results in its being categorized as aromatic or basic, depending on pH.
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