Which of the following would not be part of the drug discovery process?
A. examining folklore for herbs and potions
B. changing an old drug a little and testing the new drug for activity
C. random testing of new compounds for drug activity
D. learning the exact shape of various receptor sites
E. All of the above are part of the process.
Answer: E
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Which of the following cannot be caused by overpumping of ground water?
A) A cone of depression B) Subsidence and compaction of the aquifer C) A change in the direction of groundwater flow D) Bringing contamination into previously uncontained wells E) All of these are possible consequences of overpumping.
Which of the following is not true about the spatial scales at which soil scientists study soils?
A) The smallest individual unit with which soils are described is called a soil pedon. B) A pedon can be about 1 to 10 square meters and deep enough (about 2 meters deep) to distinguish soil horizons. C) A pedon must be significantly different in properties from the pedons adjacent to it. D) Boundaries between different soil types on the landscape can be gradational or fairly abrupt.
How are the levels of carbon dioxide linked to the photic and aphotic zones? How does this relate to
the temperature of the water? What will be an ideal response?
With modern technology such as the Global Positioning System (GPS), geologists still cannot accurately measure the slow shortening and uplift of mountains because these processes occur at a very small speed.
a. true b. false