Bio 101 REAL Exam 2 QUESTIONS
WITH VERIFIED ANSWER |ALREADY
PASSED
ATP hydrolysis is
a. endergonic.
b. exergonic.
c. chemoautotrophic.
d. None of the above - ANSWER exergonic.
Enzymes are biological catalysts and function by
a. increasing free energy in a system.
b. lowering activation energy of a reaction.
c. lowering entropy in a system.
d. increasing temperature near a reaction. - ANSWER
lowering activation energy of a reaction.
Which of the following contribute to the specificity of
enzymes?
a. Each enzyme has a narrow range of temperature and
pH optima.
b. Each enzyme has a specific active site that interacts
with a particular substrate.
c. Substrates themselves may alter the active site slightly
for optimum catalysis.
d. Enzymes are more active at higher temperatures
e. All of the above - ANSWER Enzymes are more active
at higher temperatures
Coenzymes and cofactors, as well as prosthetic
groups, assist enzyme function by
a. stabilizing three dimensional shape and maintaining
active sites.
b. assisting with the binding of enzyme and substrate.
c. Maintaining active sites in an active configuration.
d. Reversibly binding to the enzyme to regulate the
enzyme's activity
e. a, b, and c only - ANSWER Stabilizing three
dimensional shape and maintaining active sites.
Assisting with the binding of enzyme and substrate.
Maintaining active sites in an active configuration.
Which of the following are characteristics of
enzymes?
a. They are consumed by the enzymemediated reaction.
b. They are not altered by the enzymemediated reaction.
c. They raise activation energy.
d. All of the above - ANSWER T
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