Answer the question using the accompanying graph. Which portion of the graph shows the activation energy in the
absence of enzyme?
a. A
b. B
c. C
d. W + X
e. Y + Z
ANSWER: a
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The species richness of trees can be predicted by
A. the time hypothesis. B. species-area effect. C. patterns of smaller insects. D. the evapotranspiration rate. E. the species-area effect.
Methylation affects protein synthesis by
affecting which of the following proteins?
a. histones b. RNA polymerase c. DNA polymerase d. hemoglobin e. transcription factors
Which of the following can be caused by vomiting, when hydrochloric acid is lost from the stomach?
A) hypernatremia B) hypokalemia C) hypercalcemia D) hypochloremia
African sleeping sickness is caused by Trypanosoma brucei, a flagellated protist with a kinetoplast. Which of the following diseases is caused by a pathogen classified in the same supergroup of protists as T. brucei?
A. amoebic dysentery B. giardiasis C. malaria D. dinoflagellate toxin-induced nervous disorders