Which of the following is NOT true of enzyme
behavior?
a. Enzyme shape may change during catalysis.
b. The active site of an enzyme orients its
substrate molecules, thereby promoting
interaction of their reactive parts.
c. All enzymes have an active site where
substrates are temporarily bound.
d. Each enzyme can catalyze only a specific
reaction.
e. Enzyme activity is not affected by pH and
temperature.
E
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Conservation biologists conduct a population viability analysis to determine ____
a. whether an environment is too badly degraded to support a species b. how large a population must be to ensure its long-term survival c. likely source populations d. likely sink populations e. the annual reproduction rate of a population
What brain imaging technique detects changes in blood flow?
a. x-rays b. electroencephalograph (EEG) c. positron emission tomography (PET) d. functional magnetic resonance imaging (fMRI) e. microscopy
When Griffith injected a mixture of dead S bacteria and live, capsuleless R bacteria, the mice
A. remained healthy. B. reproduced quicker. C. became ill but lived. D. died of pneumonia.
The reaction phosphoenolpyruvate + ADP ? pyruvate + ATP (? G = -7.5 kcal/mole)
A. is an exergonic reaction. B. involves the transfer of energy from ATP to phosphoenolpyruvate. C. involves the transfer of a phosphate to phosphoenolpyruvate. D. is not spontaneous. E. is an endergonic reaction.