PCB 3023 Exam 1 Quiz 1, 2, 3 – Answers (Latest Update A+ Graded)

PCB 3023 EXAM 1 QUIZ 1 2 3 WITH ANSWERS
LATEST UPDATE ALREADY GRADED A+


4. Protein synthesis takes place in the _____.
A. Nucleus
B. Mitochondria
C. ER
D. Cytosol
E. b, c and d - correct answer- E. b, c and d


7. Which of the statements is untrue about interatomic bonds?
A. Energy is released when a bond forms.
B. Energy needs to be supplied to a bond to break it.
C. Bond strengths are identical in vacuum and in water.
D. Under physiological conditions, covalent bonds can be used to
keep molecules together.
E. While covalent bonds can be polar and non-polar, ionic bonds
are always polar - correct answer- C. Bond strengths are
identical in vacuum and in water.


8. Bases increase pH by

, A. Releasing H+
B. ReleasingOH-.
C. Breaking down H2O
D. Any of the above mechanisms - correct answer- B.
ReleasingOH-.


A protein domain
A. cannot have beta sheets.
B. can fold only in the presence of the rest of the protein.
C. is always composed of multiple peptides.
D. can be disordered. - correct answer- D. can be
disordered.


Assuming that the kinetics of a phosphatase can be described by
the Michaelis-Menten relationship, competitive inhibition of this
enzyme will
A. Alter the slope of the line in the Lineweaver-Burk plot, but
not the maximum rate of the reaction.
B. Alter the slope of the line in the Lineweaver-Burk plot and
reduce the maximum rate of the reaction.
C. Change the maximum rate of the reaction, but not the slope
of the line in the Lineweaver-Burk plot.