Corrosives are categorized as _____.
a. Organic and inorganic
b. Acids or bases
c. Liquids or solids
d. Polar or nonpolar
Answer: b. Acids or bases
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Within the troposphere, the atmosphere gets warmer with increasing altitude.
a. true b. false
The elevation limit of a stream downcutting on a land mass is called _______.
a - meandering b - base level c - talus d - ground zero e - a drainage anomaly
The major ions of seawater are those which ________.
A. have residence times that are short relative to the mixing time of the oceans B. are used by living organisms to build their soft tissues C. do not vary from place to place in the oceans, except as salinity varies D. None of these is correct E. All of these are correct
Which of the following is untrue in the lock-and-key model?
A. Drugs can interact strongly with more than one receptor site. B. The drug is tightly bound to the protein. C. Drugs can interact differently with different receptors. D. More than one drug can interact with same receptor site. E. All of the above are true.