TTU Chem 3310 Exam 1 Questions &
Answers (Grade A+)
What is the H+ concentration in a bottle of bleach that has a pH of
12? -
correct answer ✅10^-12
What charged group(s) are present in Asp at a pH of 7?
a. -NH3 +
b. -COO-
c. -NH2 +
d. A and B -
correct answer ✅d
At a pH of 12, what charged group(s) is/are present in L-threonine?
a. -NH3+
b. -COO-
c. -NH2+
d. a. and b.
e. none of the above -
correct answer ✅B
What is the predominant driving force behind the hydrophobic
effect?
, TTU Chem 3310 Exam 1 Questions &
Answers (Grade A+)
a. Enthalpy
b. Entropy
c. the weak nuclear force
d. None of the above.
e. None of the above. -
correct answer ✅Entropy
Why is the peptide bond planar?
a. Bulky side chains prevent free rotation around the bond.
b. It exhibits partial double-bond character, preventing rotation.
c. Hydrogen bonding between the NH and C=O groups limits
movement.
d. None of the above.
e. All of the above. -
correct answer ✅B
Which of the following amino acid residues would most likely be
buried in the interior of a water-soluble, globular protein?
a. Asp
b. Ser
Answers (Grade A+)
What is the H+ concentration in a bottle of bleach that has a pH of
12? -
correct answer ✅10^-12
What charged group(s) are present in Asp at a pH of 7?
a. -NH3 +
b. -COO-
c. -NH2 +
d. A and B -
correct answer ✅d
At a pH of 12, what charged group(s) is/are present in L-threonine?
a. -NH3+
b. -COO-
c. -NH2+
d. a. and b.
e. none of the above -
correct answer ✅B
What is the predominant driving force behind the hydrophobic
effect?
, TTU Chem 3310 Exam 1 Questions &
Answers (Grade A+)
a. Enthalpy
b. Entropy
c. the weak nuclear force
d. None of the above.
e. None of the above. -
correct answer ✅Entropy
Why is the peptide bond planar?
a. Bulky side chains prevent free rotation around the bond.
b. It exhibits partial double-bond character, preventing rotation.
c. Hydrogen bonding between the NH and C=O groups limits
movement.
d. None of the above.
e. All of the above. -
correct answer ✅B
Which of the following amino acid residues would most likely be
buried in the interior of a water-soluble, globular protein?
a. Asp
b. Ser
