Rutgers Intro to Biochem Murphy Module
2 Questions and Answers
1. What is the isoelectric point of the following tetrapetide that
contains the amino acids represented by the single letters "DREN",
such that D is at the amino-terminal end of the peptide and N is at
the carboy-terminal end. 3.86
4.06
6.53
8.8
12.48
Answer 4.06
2. What is the function of a lyase enzyme.
To assist the substrate by binding to the enzyme, enabling substrate to
active site engagement
to facilitate a reaction of one substrate to form two products with the use
of water
to facilitate a reaction of one substrate to form two products without the
use of water
To tell fibs
Answer to facilitate a reaction of one substrate to form two products without the use of water
3. If the free energy change ΔG for a reaction is -46.11 kJ/mol, the
1/
16
,reaction is
at equilibrium.
endergonic.
endothermic.
exergonic.
exothermic.
Answer exergonic.
4. Determine the net charge of the following tetrapeptide at pH 13.5
that con- tains the amino acids represented by the single letters
"MRPH", such that M is at the amino-terminal end of the peptide and H is
at the carboy-terminal end.
+2
+1
0
-1
-2
Answer -1
5. Local folding of a protein occurs at what defined level of protein
folding? Primary
Secondary
Tertiary
Quarternary
All of the above
2/
16
, Answer Secondary
6. Determine the net charge of the following tetrapeptide at pH 3 that
contains the amino acids represented by the single letters "KYLE", such
that K is at the amino-terminal end of the peptide and E is at the carboy-
terminal end.
+2
+1
0
-1
-2
Answer +1
7. What is the isoelectric point of the following tetrapetide that
contains the amino acids represented by the single letters "HPRM",
such that H is at the amino-terminal end of the peptide and M is at
the carboy-terminal end. 10.83
10.85
7.59
7.61
1.24
Answer 10.83
8. Which of the following amino acids contain a hydrophobic side
chain Leucine
3/
16
2 Questions and Answers
1. What is the isoelectric point of the following tetrapetide that
contains the amino acids represented by the single letters "DREN",
such that D is at the amino-terminal end of the peptide and N is at
the carboy-terminal end. 3.86
4.06
6.53
8.8
12.48
Answer 4.06
2. What is the function of a lyase enzyme.
To assist the substrate by binding to the enzyme, enabling substrate to
active site engagement
to facilitate a reaction of one substrate to form two products with the use
of water
to facilitate a reaction of one substrate to form two products without the
use of water
To tell fibs
Answer to facilitate a reaction of one substrate to form two products without the use of water
3. If the free energy change ΔG for a reaction is -46.11 kJ/mol, the
1/
16
,reaction is
at equilibrium.
endergonic.
endothermic.
exergonic.
exothermic.
Answer exergonic.
4. Determine the net charge of the following tetrapeptide at pH 13.5
that con- tains the amino acids represented by the single letters
"MRPH", such that M is at the amino-terminal end of the peptide and H is
at the carboy-terminal end.
+2
+1
0
-1
-2
Answer -1
5. Local folding of a protein occurs at what defined level of protein
folding? Primary
Secondary
Tertiary
Quarternary
All of the above
2/
16
, Answer Secondary
6. Determine the net charge of the following tetrapeptide at pH 3 that
contains the amino acids represented by the single letters "KYLE", such
that K is at the amino-terminal end of the peptide and E is at the carboy-
terminal end.
+2
+1
0
-1
-2
Answer +1
7. What is the isoelectric point of the following tetrapetide that
contains the amino acids represented by the single letters "HPRM",
such that H is at the amino-terminal end of the peptide and M is at
the carboy-terminal end. 10.83
10.85
7.59
7.61
1.24
Answer 10.83
8. Which of the following amino acids contain a hydrophobic side
chain Leucine
3/
16
