BIOCHEMISTRY MODULE 3 EXAM
QUESTIONS WITH VERIFIED
ANSWERS RATED A+
True or False: The amino acids lysine and arginine both contain sulfur atoms. -
CORRECT ANSWERSFalse
True or False: The following secondary structure shown below is an example of a beta-
turn. - CORRECT ANSWERSFalse
True or False. The side chain of histidine is bonded to the backbone nitrogen atom. -
CORRECT ANSWERSFalse
True or False: The name of the molecule that binds to an enzyme is called the ligand. -
CORRECT ANSWERSFalse
True or False: An inhibitor that binds at the active site is a coenzyme. - CORRECT
ANSWERSFalse
Which amino acids both have an R group (side chain) with an -OH functional group? -
CORRECT ANSWERSSer and Thr
The formation of a peptide bond between two amino acids is an example of a(n) _____
reaction. - CORRECT ANSWERSCondensation
The peptide Ala-Glu-Gly-Ala-Leu has ______ . - CORRECT ANSWERSFour peptide
bonds
Formally, when there are 100 or more amino acids are covalently linked together that is
called a _________. - CORRECT ANSWERSProtein
What unit is used by biochemists to indicate the mass of a protein? - CORRECT
ANSWERSDa
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 - CORRECT ANSWERSA
Which of the following correctly matches the amino acid with its one letter abbreviation?
- CORRECT ANSWERSGlutamic acid, E
The order of amino acids in a protein is written _________. - CORRECT ANSWERSN
to C-terminus
Roughly how many amino acids are there in one turn of an alpha helix? - CORRECT
ANSWERS3.6
In an alpha helix, the R groups on the amino acid residues: - CORRECT ANSWERSAre
found on the outside of the helix spiral
Motifs are classified primarily by their: - CORRECT ANSWERSContent and
arrangement of the secondary structure
The secondary structure shown below is an example of a(n): - CORRECT
ANSWERSAntiparallel beta sheet
The overall three-dimensional shape of a single folded polypeptide is ________
structure. - CORRECT ANSWERSTertiary
QUESTIONS WITH VERIFIED
ANSWERS RATED A+
True or False: The amino acids lysine and arginine both contain sulfur atoms. -
CORRECT ANSWERSFalse
True or False: The following secondary structure shown below is an example of a beta-
turn. - CORRECT ANSWERSFalse
True or False. The side chain of histidine is bonded to the backbone nitrogen atom. -
CORRECT ANSWERSFalse
True or False: The name of the molecule that binds to an enzyme is called the ligand. -
CORRECT ANSWERSFalse
True or False: An inhibitor that binds at the active site is a coenzyme. - CORRECT
ANSWERSFalse
Which amino acids both have an R group (side chain) with an -OH functional group? -
CORRECT ANSWERSSer and Thr
The formation of a peptide bond between two amino acids is an example of a(n) _____
reaction. - CORRECT ANSWERSCondensation
The peptide Ala-Glu-Gly-Ala-Leu has ______ . - CORRECT ANSWERSFour peptide
bonds
Formally, when there are 100 or more amino acids are covalently linked together that is
called a _________. - CORRECT ANSWERSProtein
What unit is used by biochemists to indicate the mass of a protein? - CORRECT
ANSWERSDa
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 - CORRECT ANSWERSA
Which of the following correctly matches the amino acid with its one letter abbreviation?
- CORRECT ANSWERSGlutamic acid, E
The order of amino acids in a protein is written _________. - CORRECT ANSWERSN
to C-terminus
Roughly how many amino acids are there in one turn of an alpha helix? - CORRECT
ANSWERS3.6
In an alpha helix, the R groups on the amino acid residues: - CORRECT ANSWERSAre
found on the outside of the helix spiral
Motifs are classified primarily by their: - CORRECT ANSWERSContent and
arrangement of the secondary structure
The secondary structure shown below is an example of a(n): - CORRECT
ANSWERSAntiparallel beta sheet
The overall three-dimensional shape of a single folded polypeptide is ________
structure. - CORRECT ANSWERSTertiary
