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Biochemistry Module 3 Exam
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Biochemistry Module 3 Exam
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Biochemistry Module 3 ExamTrue or False: The amino acids lysine and arginine both contain sulfur atoms.
- -False
-True or False: The following secondary structure shown below is an
example of a beta-turn. - -False
-True or False. The side chain of histidine is bonded to the backbone
nitrogen atom. - -False
-True or False: The name of the molecule that binds to an enzyme is called
the ligand. - -False
-True or False: An inhibitor that binds at the active site is a coenzyme. - -
False
-Which amino acids both have an R group (side chain) with an -OH functional
group? - -Ser and Thr
-The formation of a peptide bond between two amino acids is an example of
a(n) _____ reaction. - -Condensation
-The peptide Ala-Glu-Gly-Ala-Leu has ______ . - -Four peptide bonds
-Formally, when there are 100 or more amino acids are covalently linked
together that is called a _________. - -Protein
-What unit is used by biochemists to indicate the mass of a protein? - -Da
-All of the 20 standard amino acids contain an R-group that is attached to
the:
A) α carbon
B) Carboxyl group
C) Amino group
D) β carbon
E) None of the above - -A
-Which of the following correctly matches the amino acid with its one letter
abbreviation? - -Glutamic acid, E
-The order of amino acids in a protein is written _________. - -N to C-terminus
-Roughly how many amino acids are there in one turn of an alpha helix? - -
3.6
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