Bio 93 MT 2 Practice Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
1. ATP is required for chitinase to E
function properly. Which of the
following statements about
ATP is TRUE?
A. The hydrolysis of ATP is an
endergonic reaction with DG < 0
B. Oxygen is required for ATP
hydrolysis to proceed
C. ATP hydrolysis powers
chemical
work by heating the surroundings
D. ATP stores energy in its bonds
as
kinetic energy
E. ADP and Pi have lower free
energy
than ATP and water
,2. The main function of chitinase is B
to
catalyze the hydrolysis of chitin.
Suppose that
chitinase is added to a solution of
chitin and ATP in water. What do
you
expect to occur as
the reaction proceeds?
A. DG would decrease, EA would
decrease, and the concentration of
monosaccharides would
increase
B. DG would not change, EA
would
decrease, and the concentration of
monosaccharides would
increase
C. DG would increase, EA would
increase, and the concentration of
amino acids would increase
D. DG would not change, EA
would
decrease, and the concentration of
amino acids would
increase
E. DG would not change, EA
would
increase, and the concentration of
monosaccharides would
increase
, 3. Chitinase from the bacterial B
species
Microbispora was isolated and
studied by
researchers. They measured
chitinase
activity as a function of pH and
temperature (see figures at right).
What
can you conclude from these
data?
A. Microbiospora likely live in
environments with low hydrogen
ion
concentrations
B. The primary structure of
chitinase
is
likely unaffected at temperatures
above 70 degrees
C. Chitinase is able to hydrolyze
cellulose very well at pH ~3
D. Chitinase is more active at 30
degrees than at pH ~11
Answers with Verified Solutions | Latest
Updated 2026
1. ATP is required for chitinase to E
function properly. Which of the
following statements about
ATP is TRUE?
A. The hydrolysis of ATP is an
endergonic reaction with DG < 0
B. Oxygen is required for ATP
hydrolysis to proceed
C. ATP hydrolysis powers
chemical
work by heating the surroundings
D. ATP stores energy in its bonds
as
kinetic energy
E. ADP and Pi have lower free
energy
than ATP and water
,2. The main function of chitinase is B
to
catalyze the hydrolysis of chitin.
Suppose that
chitinase is added to a solution of
chitin and ATP in water. What do
you
expect to occur as
the reaction proceeds?
A. DG would decrease, EA would
decrease, and the concentration of
monosaccharides would
increase
B. DG would not change, EA
would
decrease, and the concentration of
monosaccharides would
increase
C. DG would increase, EA would
increase, and the concentration of
amino acids would increase
D. DG would not change, EA
would
decrease, and the concentration of
amino acids would
increase
E. DG would not change, EA
would
increase, and the concentration of
monosaccharides would
increase
, 3. Chitinase from the bacterial B
species
Microbispora was isolated and
studied by
researchers. They measured
chitinase
activity as a function of pH and
temperature (see figures at right).
What
can you conclude from these
data?
A. Microbiospora likely live in
environments with low hydrogen
ion
concentrations
B. The primary structure of
chitinase
is
likely unaffected at temperatures
above 70 degrees
C. Chitinase is able to hydrolyze
cellulose very well at pH ~3
D. Chitinase is more active at 30
degrees than at pH ~11
