High levels of carbon dioxide in the atmosphere are causing ____
a. the pH of the ocean to increase
b. the pH of the ocean to decrease
c. the natural buffers in the ocean to die
d. increased calcification of the coral reefs
e. increased biodiversity in coral reefs
ANSWER: b
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The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession.
A. opportunistic B. secondary C. species-rich D. primary
You identify an enzyme involved in a cellular reaction. How does the enzyme affect the reaction equilibrium between reactants and products and the time needed to reach equilibrium?
A. It alters the reaction equilibrium and shortens the time needed to reach equilibrium. B. The reaction equilibrium is unaffected, but it shortens the time needed to reach equilibrium. C. It alters the reaction equilibrium and lengthens the time needed to reach equilibrium. D. The reaction equilibrium is unaffected, but it lengthens the time needed to reach equilibrium.
A young male baboon leaves the troop that he was born in and joins a small neighboring troop of small baboons. He quickly rises to become a dominant male. From an evolutionary point of view, what important process has occurred?
A) The bottleneck effect B) Natural selection C) Gene flow D) Genetic drift E) Nonrandom mating
A physiologist is a biologist who studies the
A) structure of body parts. B) evolution of animals. C) physics of living things. D) function of body parts.