Which of the following is true of the G-protein-adenylate cyclase cascade?
A) It is only associated with monoamine messengers.
B) It is only associated with peptidergic messengers.
C) It is associated with both monoamine and peptidergic messengers.
D) It is associated with neither monoamine nor peptidergic messengers.
C
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Which of the following choices best describes the sequence scientists typically use in the beginning stages of their investigations about how nature works?
a. analyze data -> search literature -> perform experiment -> identify a problem -> ask a question b. ask a question -> search literature -> perform experiment -> analyze data -> identify a problem c. search literature -> ask a question -> identify a problem -> analyze data -> perform experiment d. identify a problem ->search literature -> ask a question -> perform experiment -> analyze data e. ask a question->search literature -> identify a problem -> perform experiment -> analyze data
A very massive object A and a less massive object B move toward each other under the influence of gravitation. Which force, if either, is greater?
A) the force on A B) the force on B C) Both forces are the same.
Which of the following is closely associated with the smell of rotting fish?
A) NH3 B) CH3NH2 C) (CH3)2NH D) (CH3)3N
In the Rocky Mountain region of the United States, north-facing slopes (downhill direction is toward the north) are typically moister and more heavily forested than south-facing slopes. Why?
A) South-facing slopes receive more moisture and sunlight; rock weathering is slower. B) North-facing slopes receive more sunlight in the summer; snow melts faster and more soil moisture is available for the trees. C) North-facing slopes receive about the same amount of precipitation as south-facing slopes; less moisture evaporates from north-facing slopes. D) South-facing slopes receive less moisture, yet rock weathering is faster.