CHEM 212 Biochem - exam 3 Portage learning FALL 2025

1. True or False: The amino false
acids serine and threonine
both con- tain sulfur
atoms
False
2. True or False: The following
sec- ondary structure is an
example of an Antiparallel
beta sheet: É false
(it is attached to alpha carbon of the amino acid
3. True or False. The side back- bone)
chain of phenylalanine is
false
bonded to the backbone
nitrogen atom.

4. True or False: The name of
the
molecule that binds to an enzyme (it is the substrate)
is called the ligand.

5. True or False: An inhibitor
that binds at the active site 7. The formation of a peptide
is an un- competitive bond between two amino
inhibitor. acids is an ex- ample of a(n)
reaction.
6. Which amino acids differ by -Cleavage
only one atom? -Condensation
A. Ser and Thr
B. Leu and Ile
C. Ala and Ser
D. Asp and Asn
E. Ser and Cys

, false
(it is a competitive inhibitor)


E. Ser and Cys




Condensation