The anticancer drug fluoruracil functions by inhibiting the synthesis of which DNA nucleoside?
A) deoxyadenosine
B) deoxyguanosine
C) deoxythymidine
D) deoxycytidine
C
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Members of a clade can have different derived and primitive characteristics
a. True b. False
How does a mineral resource differ from an ore deposit?
An ore deposit occurs naturally, whereas a mineral resource does not. Ore deposits are economically extractable, whereas mineral resources are not. Mineral resources are concentrations of metals, whereas ore deposits are not. Ore deposits are concentrations of metal, whereas mineral resources do not contain metals. A mineral resource occurs naturally, whereas an ore deposit does not.
Sub-Saharan Africa and South Asia have some of the world's lowest literacy rates, averaging ________ percent
A) below 40 B) below 50 C) below 60 D) below 70 E) below 20
A strong negative index for the North Atlantic Oscillation (NAO) usually means that there is ________ of a pressure difference between the Bermuda (subtropical) high and the Icelandic low pressure. This brings ________ than average temperatures over the northern U.S. and northwest Europe
A. less, cooler. B. greater, warmer. C. greater, cooler. D. less, warmer.